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 A145057 #14 Nov 16 2024 16:36:11 %S A145057 2,7,1,2,23,2,1,3,1,2,5,1,2,4,79,4,2,1,5,2,1,3,1,2,7,2,1,3,1,2,5,1,2, %T A145057 4,11,2,1,3,1,2,5,1,2,4,9,1,2,4,8,287,8,4,2,1,9,4,2,1,5,2,1,3,1,2,11, %U A145057 4,2,1,5,2,1,3,1,2,7,2,1,3,1,2,5,1,2,4,15,4,2,1,5,2,1,3,1,2,7,2,1,3,1,2,5,1 %N A145057 First differences of A031443. %C A145057 a(n) equals the differences between k where A145037(k) equals zero. - _Reikku Kulon_, Oct 02 2008 %H A145057 David A. Corneth, <a href="/A145057/b145057.txt">Table of n, a(n) for n = 1..10000</a> %e A145057 a(3) = A031443(3) - A031443(3-1) = 10 - 9 = 1. - _David A. Corneth_, Apr 26 2022 %t A145057 Differences[Select[Range[0, 1000], SameQ@@DigitCount[#, 2] &]] (* _Paolo Xausa_, Nov 16 2024 *) %Y A145057 Cf. A031443, A145037. %K A145057 nonn,easy,base %O A145057 1,1 %A A145057 _Reikku Kulon_, Sep 30 2008