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 A303852 #12 Feb 16 2025 08:33:54 %S A303852 1,1,2,4,8,13,23,42,70,114,178,313,479,759,1119,1858,2687,4207,5960, %T A303852 9468,13203,20198,27728,42955,58293,87333,117084,176706,234579,346450, %U A303852 455637,673619,878603,1276936,1652382,2404288,3089769,4429895,5654741,8105634 %N A303852 Number of pairs (lambda,mu) of partitions lambda of n and mu of ceiling(n/2) with mu <= lambda (by diagram containment). %H A303852 Alois P. Heinz, <a href="/A303852/b303852.txt">Table of n, a(n) for n = 0..200</a> %H A303852 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FerrersDiagram.html">Ferrers Diagram</a> %H A303852 Wikipedia, <a href="https://en.wikipedia.org/wiki/Ferrers_diagram">Ferrers diagram</a> %F A303852 a(n) = A259478(n,ceiling(n/2)). %Y A303852 Bisections give: A303861 (even part), A303863 (odd part). %Y A303852 Cf. A259478. %K A303852 nonn %O A303852 0,3 %A A303852 _Alois P. Heinz_, May 01 2018