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A056933 Antichains (or order ideals) in the poset 2*2*6*n or size of the distributive lattice J(2*2*6*n) 8
1, 336, 30900, 1301610, 32046856, 530962446, 6479344016, 61951251333, 485198553532, 3217462615688, 18528857431906, 94529315562186, 434088353496446, 1817613939845670, 7014049051387480, 25167786776727516 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

Berman and Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), p. 103-124

LINKS

Table of n, a(n) for n=0..15.

J. Berman and P. Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), 103-124. [Annotated scanned copy]

Index entries for sequences related to posets

MATHEMATICA

MatrixPower[ ZetaP[ #, n + 1 ][ [ 1, Card[ # ] ] ]&@JofP[ Chain[ 2, 2, 6 ] ] (* This Mathematica program contains undefined functions and at present does not work. *)

CROSSREFS

Cf. A000372, A006360, A006361, A006362, A056932, A056934, A056935, A056936, A056937.

Sequence in context: A268626 A258418 A268969 * A289346 A008693 A068298

Adjacent sequences:  A056930 A056931 A056932 * A056934 A056935 A056936

KEYWORD

nonn,easy

AUTHOR

Mitch Harris

STATUS

approved

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Last modified January 17 22:51 EST 2019. Contains 319251 sequences. (Running on oeis4.)