Nope
Triangular numbers are 1,3,6,10,15,21,28,36
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Triangular numbers can be calculated by using the following formula (n * (n+1) ) / 2 so for 30 the answer is (30*31)/2 = 465
Is 63 a triangular number I think it is a triangular number.
013
No, 35 is not a triangular number.
No, 18 is not a triangular number.