This form of presentation, press the green flag and see. eg. next number = 10 number of triangular = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55 similar: square numbers - https://scratch.mit.edu/projects/96143241/ flowers triangular - https://scratch.mit.edu/projects/3119759/
leszpio
