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 A372100 #10 Apr 26 2025 01:29:28 %S A372100 1,2,3,4,8,17,23,29,38,39,44,56,57,58,91,114,145,147,156,168,182,208, %T A372100 219,239,277,297,300,307,331,360,367,442,452,477,487,492,507,513,568, %U A372100 571,614,893,963,1275,1283,1288,1440,1563,1702,1957,2019,2440,2471,2566,3004 %N A372100 a(n) = 2*A000120(3^k) - A070939(3^k) with k = A372099(n). %C A372100 a(n)/2 are the differences at supporting points of the upper envelope of the scatter band of the deviation of the binary weight of 3^k from half the length of the corresponding binary number. %H A372100 Hugo Pfoertner, <a href="/A372100/b372100.txt">Table of n, a(n) for n = 1..96</a> %Y A372100 Cf. A000120, A000244, A011754, A070939, A078839, A372097, A372098, A372099. %K A372100 nonn %O A372100 1,2 %A A372100 _Hugo Pfoertner_, Apr 25 2024