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 A251394 #5 Dec 05 2014 09:56:12 %S A251394 1,9,11,13,15,22,23,30,32,34,36,38,40,43,45,51,53,61,62,68,70,72,74, %T A251394 76,79,87,88,94,96,98,101,103,105,114,116,118,122,124,126,127,132,134, %U A251394 142,144,146,148,150,153,158,160,166,167,175,177,179,181,185,187 %N A251394 Indices of numbers in A098550, that are neither multiples of 2 nor multiples of 3, cf. A007310. %C A251394 GCD(A098550(a(n)),6) = 1. %H A251394 Reinhard Zumkeller, <a href="/A251394/b251394.txt">Table of n, a(n) for n = 1..10000</a> %o A251394 (Haskell) %o A251394 a251394 n = a251394_list !! (n-1) %o A251394 a251394_list = filter ((== 1) . gcd 6 . a098550) [1..] %Y A251394 Cf. A098550, A007310, A020639, A251237, A251393. %K A251394 nonn %O A251394 1,2 %A A251394 _Reinhard Zumkeller_, Dec 05 2014