Integers n such that (n^2)/2 is the arithmetic mean of a pair of twin primes.
6, 12, 42, 48, 72, 84, 90, 174, 204, 264, 306, 372, 408, 456, 474, 546, 594, 600, 642
1 seqfan posts
Fri Aug 20 10:09:17 CEST 2010 [seqfan] A152786 = 6*A037073: near-duplicates?