No, TNs are 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171...
Chat with our AI personalities
Is 63 a triangular number I think it is a triangular number.
013
No, 18 is not a triangular number.
No, 35 is not a triangular number.
yes it is a triangular number