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 A323792 #5 Jan 28 2019 08:07:26
%S A323792 1,1,4,11,43,145,614,2549
%N A323792 Number of non-isomorphic weight-n multisets of sets of sets.
%C A323792 All sets and multisets must be finite, and only the outermost may be empty.
%C A323792 The weight of an atom is 1, and the weight of a multiset is the sum of weights of its elements, counting multiplicity.
%e A323792 Non-isomorphic representatives of the a(1) = 1 through a(3) = 11 multiset partitions:
%e A323792 {{1}} {{12}} {{123}}
%e A323792 {{1}{2}} {{1}{12}}
%e A323792 {{1}}{{1}} {{1}{23}}
%e A323792 {{1}}{{2}} {{1}}{{12}}
%e A323792 {{1}}{{23}}
%e A323792 {{1}{2}{3}}
%e A323792 {{1}}{{1}{2}}
%e A323792 {{1}}{{2}{3}}
%e A323792 {{1}}{{1}}{{1}}
%e A323792 {{1}}{{1}}{{2}}
%e A323792 {{1}}{{2}}{{3}}
%Y A323792 Cf. A007716, A049311, A050326, A050343, A255906, A283877, A306186, A316980, A318564, A318565, A318566.
%Y A323792 Cf. A323787, A323788, A323789, A323790, A323791, A323793, A323794, A323795.
%K A323792 nonn,more
%O A323792 0,3
%A A323792 _Gus Wiseman_, Jan 27 2019