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 A275813 #7 Aug 11 2016 23:48:06 %S A275813 0,3,5,8,10,13,14,19,22,30,33,35,36,39,41,42,45,47,50,52,54,57,59,63, %T A275813 65,69,71,73,74,81,83,84,87,89,93,95,97,100,105,107,111,113,114,117, %U A275813 119,144,147,149,152,154,157,158,163,166,168,171,173,176,178,181,182,187,190,192,195,197,200,202,205,206,211,214,216,219,221 %N A275813 Positions of odd terms in A060131; indices of permutations of an odd order in tables A060117 & A060118. %C A275813 Indexing starts with zero, because a(0) = 0 (indicating an identity permutation) is a special case in this sequence. %H A275813 Antti Karttunen, <a href="/A275813/b275813.txt">Table of n, a(n) for n = 0..16384</a> %H A275813 <a href="/index/Fa#facbase">Index entries for sequences related to factorial base representation</a> %o A275813 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A275813 (define A275813 (MATCHING-POS 0 0 (lambda (n) (odd? (A060131 n))))) %Y A275813 Complement: A275814. %Y A275813 Cf. A060117, A060118, A060131. %Y A275813 Cf. A275809 (a subsequence). %K A275813 nonn %O A275813 0,2 %A A275813 _Antti Karttunen_, Aug 10 2016