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Search: id:A056933
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| A056933 |
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Antichains (or order ideals) in the poset 2*2*6*n or size of the distributive lattice J(2*2*6*n) |
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+0
9
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| 1, 336, 30900, 1301610, 32046856, 530962446, 6479344016, 61951251333, 485198553532, 3217462615688, 18528857431906, 94529315562186, 434088353496446, 1817613939845670, 7014049051387480, 25167786776727516
(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, 2, 6 ] ]
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CROSSREFS
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Cf. A000372, A006360, A006361, A006362, A056932, A056934, A056935, A056936, A056937.
Sequence in context: A067708 A059467 A159206 this_sequence A008693 A068298 A003790
Adjacent sequences: A056930 A056931 A056932 this_sequence A056934 A056935 A056936
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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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