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 A360468 #60 Feb 18 2023 15:06:12
%S A360468 1,1,4,12,43,134,448,1387,4347,13128,39350,115285,334179,952512,
%T A360468 2684714,7468402,20556838,55963935,150896053,402999801,1066962557,
%U A360468 2801089402,7295920768,18859954024,48404773852,123381167011,312438704848,786231143489,1966628476977
%N A360468 Number of multisets of nonempty integer partitions with a total of n parts and total sum of 2n.
%H A360468 Alois P. Heinz, <a href="/A360468/b360468.txt">Table of n, a(n) for n = 0..200</a>
%F A360468 a(n) = A055884(2n,n).
%e A360468 a(3) = 12: {[1,1,4]}, {[1,2,3]}, {[2,2,2]}, {[1],[1,4]}, {[1],[2,3]}, {[2],[1,3]}, {[2],[2,2]}, {[3],[1,2]}, {[4],[1,1]}, {[1],[1],[4]}, {[1],[2],[3]}, {[2],[2],[2]}.
%Y A360468 Cf. A000041, A008284, A055884, A072233, A360714 (the same for sets).
%K A360468 nonn
%O A360468 0,3
%A A360468 _Alois P. Heinz_, Feb 17 2023