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%I #9 Sep 01 2019 02:39:35
%S 1,2,8,23,70,178,479,1119,2687,5960,13203,27728,58293,117084,234579,
%T 455637,878603,1652382,3089769,5654741,10284636,18389288,32649594,
%U 57145095,99386432,170658713,291240275,491704106,825049784,1371281674,2266239384,3713251732
%N Number of pairs (lambda,mu) of partitions lambda of 2n and mu of n with mu <= lambda (by diagram containment).
%H Alois P. Heinz, <a href="/A303861/b303861.txt">Table of n, a(n) for n = 0..100</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/FerrersDiagram.html">Ferrers Diagram</a>
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Ferrers_diagram">Ferrers diagram</a>
%F a(n) = A259478(2n,n) = A303851(2n) = A303852(2n).
%Y Bisection (even part) of A303851 and of A303852.
%Y Cf. A259478.
%K nonn
%O 0,2
%A _Alois P. Heinz_, May 01 2018
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