1/6 of product of three numbers: n-th prime, previous and following number.
1, 4, 20, 56, 220, 364, 816, 1140, 2024, 4060, 4960, 8436, 11480, 13244, 17296
1 seqfan posts
Fri Nov 20 19:59:18 CET 2009 [seqfan] Re: Generally known (to those who know of such things)