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 A105588 #9 Sep 02 2024 00:20:26
%S A105588 1,1,2,2,2,2,3,3,4,3,4,4,5,5,5,5,7,7,7,7,9,8,9,8,11,9,10,9,11,10,10,
%T A105588 10,13,12,13,12,17,14,14,14,18,16,16,17,20,17,16,16,21,18,17,17,23,20,
%U A105588 20,18,24,22,23,21,26,23,23,22,27,24,24,24,30,25,26,24,34,27,28,26,33,28
%N A105588 Diagonal sums of a Moebius-binomial triangle.
%C A105588 Diagonal sums of A105586.
%F A105588 a(n) = Sum_{k=0..floor(n/2)} binomial(abs(mu(n-k)), abs(mu(k))).
%Y A105588 Cf. A008683, A105586.
%K A105588 easy,nonn
%O A105588 0,3
%A A105588 _Paul Barry_, Apr 14 2005