This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A225913 #8 May 24 2013 14:26:50 %S A225913 517,1525,1765,1837,2941,3241,3265,3397,3421,3565,4117,4501,4669,6349, %T A225913 7357,8569,8749,8965,9085,9997,10045,10057,10981,11929,13741,14101, %U A225913 15757,16117,18745,18949,18997,19885,20557,20629,21805,22045,22645,24445,24505,25417,25429,25681,25885,25957,26101,26245,27205 %N A225913 Composite numbers coprime to 6 such that A179382(n) = A000265(n-1), the odd part of n-1. %C A225913 Inspired by the Conjecture mentioned in A225759. %o A225913 (PARI) forstep(n=1,9e9,6, A179382(n)==(n-1)>>valuation(n-1,2) & !isprime(n) & print1(n",")) %K A225913 nonn %O A225913 1,1 %A A225913 _M. F. Hasler_, May 20 2013