Numbers n such that n! is not the sum of two nonnegative triangular numbers.
6, 11, 12, 14, 18, 19, 20, 22, 23, 25, 26, 30, 31, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45
1 seqfan posts
Wed Oct 13 04:08:07 CEST 2010 [seqfan] Re: [math-fun] Triangular+Triangular = Factorial