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 A178962 #14 Oct 14 2024 08:11:19
%S A178962 1,7,46,366,3647,44205,630956,10350572,191704349,3954598099,
%T A178962 89888942874,2231742720730,60083847852539,1743321481158041,
%U A178962 54226970410827160,1800062257926566488,63512168752599139129,2373501269897667585631
%N A178962 Partial sums of A007322.
%F A178962 a(n) = Sum_{i=1..n} Sum_{r>=0,s>=0} binomial(r*s+i-1,i)/2^(r+s+2).
%e A178962 a(3) = 1 + 6 + 39 = 46.
%Y A178962 Cf. A007322, A120733.
%K A178962 nonn
%O A178962 1,2
%A A178962 _Jonathan Vos Post_, Dec 31 2010