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 A154477 #5 Jun 02 2025 01:18:04 %S A154477 0,0,0,1,0,3,2,0,1,7,4,9,8,6,7,5,-6,-10,16,15,10,-11,-15,16,22,19,24, %T A154477 23,18,14,28,25,21,23,11,-7,-26,35,34,29,-18,39,38,9,-8,38,33,-31,-35, %U A154477 42,37,31,32,51,48,-46,54,51,40,-43,58,55,43,61,60,58,52,65,62,-2,68 %N A154477 a(n) = A153240(A080068(n)). %C A154477 This sequence gives some indication of how well the terms of A080068 are balanced as general trees, which has some implications as to the correctness of A123050 (see comments at A080070). %H A154477 A. Karttunen, <a href="/A154477/b154477.txt">Table of n, a(n) for n = 0..512</a> %Y A154477 See also A080071. %K A154477 sign %O A154477 0,6 %A A154477 _Antti Karttunen_, Jan 11 2009