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 A318816 Regular tetrangle where T(n,k,i) is the number of non-isomorphic multiset partitions of length i of multiset partitions of length k of multisets of size n. 2
 1, 2, 2, 2, 3, 4, 4, 3, 4, 3, 5, 14, 14, 9, 20, 9, 5, 14, 9, 5, 7, 28, 28, 33, 80, 33, 16, 68, 52, 16, 7, 28, 33, 16, 7, 11, 69, 69, 104, 266, 104, 74, 356, 282, 74, 29, 199, 253, 118, 29, 11, 69, 104, 74, 29, 11, 15, 134, 134, 294, 800, 294, 263, 1427, 1164 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..65. EXAMPLE Tetrangle begins: 1 2 3 5 7 2 2 4 4 14 14 28 28 3 4 3 9 20 9 33 80 33 5 14 9 5 16 68 52 16 7 28 33 16 7 Non-isomorphic representatives of the T(4,3,2) = 20 multiset partitions: {{{1}},{{1},{1,1}}} {{{1,1}},{{1},{1}}} {{{1}},{{1},{1,2}}} {{{1,1}},{{1},{2}}} {{{1}},{{1},{2,2}}} {{{1,1}},{{2},{2}}} {{{1}},{{1},{2,3}}} {{{1,1}},{{2},{3}}} {{{1}},{{2},{1,1}}} {{{1,2}},{{1},{1}}} {{{1}},{{2},{1,2}}} {{{1,2}},{{1},{2}}} {{{1}},{{2},{1,3}}} {{{1,2}},{{1},{3}}} {{{1}},{{2},{3,4}}} {{{1,2}},{{3},{4}}} {{{2}},{{1},{1,1}}} {{{2,3}},{{1},{1}}} {{{2}},{{1},{1,3}}} {{{2}},{{3},{1,1}}} CROSSREFS Cf. A007716, A050336, A050338, A255906, A269134, A317533, A317791, A318393, A318399, A318564, A318565, A318566. Sequence in context: A341121 A144000 A306284 * A085202 A096009 A000224 Adjacent sequences: A318813 A318814 A318815 * A318817 A318818 A318819 KEYWORD nonn,tabf AUTHOR Gus Wiseman, Sep 04 2018 STATUS approved

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Last modified December 1 07:48 EST 2023. Contains 367468 sequences. (Running on oeis4.)