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Search: id:A056935
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| A056935 |
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Antichains (or order ideals) in the poset 2*3*3*n or size of the distributive lattice J(2*3*3*n) |
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+0
9
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| 1, 175, 8790, 211250, 3092808, 31635580, 246441430, 1549486490, 8192995479, 37548347569, 152602439244, 559835910940, 1880152558980, 5846268790220, 16988036626948, 46486024648180, 120562654732065, 297976456047575
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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Berman and Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), p. 103-124
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LINKS
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Index entries for sequences related to posets
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MATHEMATICA
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MatrixPower[ ZetaP[ #, n + 1 ][ [ 1, Card[ # ] ] ]&@JofP[ Chain[ 2, 3, 3 ] ]
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CROSSREFS
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Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056936, A056937.
Sequence in context: A045145 A015806 A109836 this_sequence A104651 A136603 A114824
Adjacent sequences: A056932 A056933 A056934 this_sequence A056936 A056937 A056938
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KEYWORD
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nonn,easy
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AUTHOR
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Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu)
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