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A318816
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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.
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2
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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
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OFFSET
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1,2
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LINKS
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EXAMPLE
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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}}}
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CROSSREFS
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Cf. A007716, A050336, A050338, A255906, A269134, A317533, A317791, A318393, A318399, A318564, A318565, A318566.
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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