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 A386289 #7 Jul 19 2025 18:14:56 %S A386289 0,1,3,5,6,7,6,9,6,14,17,13,15,23,25,27,29,20,37,20,20,47,39,36,51,57, %T A386289 57,24,63,50,62,81,62,67,81,87,81,105,40,78,70,95,103,99,90,94,102,90, %U A386289 119,72,122,125,100,143,145,171,138,149,141,169,72,155,116 %N A386289 a(n) is the Hamming weight of A256590(n). %H A386289 Rémy Sigrist, <a href="/A386289/b386289.txt">Table of n, a(n) for n = 1..3898</a> %H A386289 Rémy Sigrist, <a href="/A386289/a386289.gp.txt">PARI program</a> %F A386289 a(n) = A000120(A256590(n)). %e A386289 a(7) = A000120(46656) = 6. %o A386289 (PARI) \\ See Links section. %Y A386289 Cf. A000120, A256590, A386249. %K A386289 nonn,base %O A386289 1,3 %A A386289 _Rémy Sigrist_, Jul 17 2025