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 A291767 #7 Sep 11 2017 12:05:31 %S A291767 1,3,3,3,7,3,3,9,3,3,9,3,7,12,3,3,9,9,3,9,3,3,16,3,7,9,3,9,9,3,3,16,9, %T A291767 3,9,3,3,16,9,3,21,3,9,9,3,9,9,9,3,16,3,3,23,3,3,9,3,9,16,9,7,9,12,3, %U A291767 9,3,9,26,3,3,9,9,9,16,3,3,16,9,3,9,9,3,23,3,7,16,3,16,9,3,3,9,9,9,26,3,3,23,3,3,9,9,9,16,9 %N A291767 Odd bisection of A291761. %C A291767 Records occur at positions: 1, 2, 5, 8, 14, 23, 41, 53, 68, 113, 122, 158, 203, 338, 365, ... (= (A147516(n)+1)/2) that give also all distinct values in this sequence: 1, 3, 7, 9, 12, 16, 21, 23, 26, 32, 34, 37, 40, 46, 48, 53, 58, 59, 64, 69, 72, 77, 81, ... Note that the terms of A291768 are all from the complementary sequence: 2, 4, 5, 6, 8, 10, 11, 13, 14, 15, 17, ... %H A291767 Antti Karttunen, <a href="/A291767/b291767.txt">Table of n, a(n) for n = 1..16385</a> %F A291767 a(n) = A291761(2n - 1). %o A291767 (Scheme) (define (A291767 n) (A291761 (+ n n -1))) %Y A291767 Cf. A147516, A278223, A291761, A291768. %K A291767 nonn %O A291767 1,2 %A A291767 _Antti Karttunen_, Sep 11 2017