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 A375571 #5 Aug 20 2024 11:26:29 %S A375571 0,1,1,2,1,1,2,3,1,1,2,1,1,1,3,4,1,1,1,1,1,2,1,1,1,3,1,1,2,1,4,5,1,1, %T A375571 1,1,2,1,1,1,1,3,1,1,1,2,1,1,1,1,1,1,1,1,1,2,4,1,1,1,1,1,5,6,1,1,2,1, %U A375571 1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1 %N A375571 a(n) is the unique integer k such that A008949(A375570(n),k) = n. %F A375571 A008949(A375570(n),a(n)) = n. %F A375571 a(2^n) = n. %F A375571 a(2^n-1) = n-1. %Y A375571 Cf. A008949, A357327, A375570. %K A375571 nonn %O A375571 1,4 %A A375571 _Pontus von Brömssen_, Aug 19 2024