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Search: id:A056936
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| A056936 |
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Antichains (or order ideals) in the poset 2*3*4*n or size of the distributive lattice J(2*3*4*n) |
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+0
9
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| 1, 490, 59542, 3092808, 89613429, 1691136270, 22954776044, 239831111938, 2024703039198, 14318216628378, 87184226214168, 467034400160664, 2239064967256060, 9741467994941264, 38902816410160608
(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, 4 ] ]
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CROSSREFS
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Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056935, A056937.
Sequence in context: A045011 A118449 A068751 this_sequence A056052 A051115 A060975
Adjacent sequences: A056933 A056934 A056935 this_sequence A056937 A056938 A056939
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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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