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 A056870 #6 Jun 19 2025 16:02:44
%S A056870 0,1,2,5,9,16,26,42,64,96,140,202,285,398,547,746,1005,1344,1780,2343,
%T A056870 3059,3972,5123,6576,8392,10663,13481,16977,21286,26594,33096,41055,
%U A056870 50750,62548,76846,94155,115032,140183,170386,206611,249934,301682
%N A056870 Difference between partial sums of partition numbers (A026905) and partial sums of numbers of partitions into distinct parts (A026906).
%t A056870 Table[ Sum[ PartitionsP[k], {k, 1, n}] - Sum[PartitionsQ[k], {k, 1, n}], {n, 1, 45}]
%t A056870 (* second program *)
%t A056870 Module[{nn=50},#[[1]]-#[[2]]&/@Thread[{Accumulate[PartitionsP[Range[nn]]],Accumulate[PartitionsQ[Range[nn]]]}]] (* _Harvey P. Dale_, Jun 19 2025 *)
%Y A056870 Cf. A026905, A026906, A056871.
%K A056870 nonn
%O A056870 1,3
%A A056870 _Robert G. Wilson v_, Sep 02 2000