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A303854 Number of pairs (lambda,mu) of partitions lambda of n and mu of four with mu <= lambda (by diagram containment).

%I A303854 #10 Feb 16 2025 08:33:54
%S A303854 5,12,25,42,70,105,158,223,319,434,595,793,1059,1382,1811,2329,3003,
%T A303854 3819,4858,6114,7701,9607,11984,14843,18370,22594,27774,33953,41473,
%U A303854 50430,61250,74102,89555,107842,129715,155550,186298,222508,265444,315864,375415
%N A303854 Number of pairs (lambda,mu) of partitions lambda of n and mu of four with mu <= lambda (by diagram containment).
%H A303854 Alois P. Heinz, <a href="/A303854/b303854.txt">Table of n, a(n) for n = 4..1000</a>
%H A303854 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FerrersDiagram.html">Ferrers Diagram</a>
%H A303854 Wikipedia, <a href="https://en.wikipedia.org/wiki/Ferrers_diagram">Ferrers diagram</a>
%Y A303854 Column k=4 of A259478.
%K A303854 nonn
%O A303854 4,1
%A A303854 _Alois P. Heinz_, May 01 2018