Taken: 1, 2, 3, 6, 9, 11, 12, 13, 15, 16, 18, 20, 21, 23, 25, 42, 49, 60, 110, 120, 130, 150, 420, 1300, 4200, 13000, 42000, 130000, 420000, 1300000, 4200000, 13000000, 42000000, 130000000, 420000000, 1300000000, 4200000000, 13000000000, 42000000000 Free Spots: 4, 5, 7, 8, 10, 14, 17, 19, 22, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 111, 112, 113, 114, 115, 116, 117, 118, 119, 121, 122, 123, 124, 125, 126, 127, 128, 129, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 400, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 421, 422, 426, 1301, 1302, 1303, 1306, 1309, 1311, 1312, 1313, 1315, 1316, 1318, 1320, 1321, 1323, 1342, 1349, 1360, 4201, 4202, 4203, 4206, 4209, 4211, 4212, 4213, 4215, 4216, 4218, 4220, 4221, 4242, 4249, 4260, 13001, 13002, 13003, 13006, 13009, 13011, 13012, 13013, 13015, 13016, 13018, 13020, 13021, 13023, 13042, 13049, 13060, 13110, 13120, 13130, 13150, 13420, 42001, 42002, 42003, 42006, 42011, 42012, 42013, 42015, 42016, 42020, 42021, 42023, 42025, 42042, 42060, 42110, 42120, 42130, 42150, 42420, 130001, 130002, 130003, 130006, 130009, 130011, 130012, 130013, 130015, 130016, 130018, 130020, 130021, 130023, 130025, 130042, 130049, 130060, 130130, 130150, 130420, 131300, 134200, 420001, 420002, 420003, 420006, 420009, 420011, 420012, 420013, 420015, 420016, 420018, 420020, 420021, 420023, 420025, 420042, 420049, 420060, 420110, 420120, 420130, 420150, 420420, 421300, 424200, 1300001, 1300002, 1300003, 1300006, 1300009, 1300011, 1300012, 1300013, 1300015, 1300016, 1300018, 1300020, 1300021, 1300023, 1300025, 1300042, 1300049, 1300060, 1300110, 1300120, 1300130, 1300150, 1300420, 1301300, 1304200, 1313000, 1342000, 4200001, 4200002, 4200003, 4200006, 4200009, 4200011, 4200012, 4200013, 4200015, 4200016, 4200018, 4200020, 4200021, 4200023, 4200025, 4200042, 4200049, 4200060, 4200110, 4200120, 4200130, 4200150, 4200420, 4201300, 4204200, 4213000, 4242000, 13000001, 13000002, 13000003, 13000006, 13000009, 13000011, 13000012, 13000013, 13000015, 13000016, 13000018, 13000020, 13000021, 13000023, 13000025, 13000042, 13000049, 13000060, 13000110, 13000120, 13000130, 13000150, 13000420, 13001300, 13004200, 13013000, 13042000, 13130000, 13420000, 42000001, 42000002, 42000003, 42000006, 42000009, 42000011, 42000012, 42000013, 42000015, 42000016, 42000018, 42000020, 42000021, 42000023, 42000042, 42000049, 42000060, 42000110, 42000120, 42000130, 42000420, 42001300, 42004200, 42013000, 42013000, 42042000, 42130000, and 42420000
