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A056934 Antichains (or order ideals) in the poset 2*2*7*n or size of the distributive lattice J(2*2*7*n) 8
1, 540, 75966, 4701698, 164489084, 3764727340, 61951251333, 782318812002, 7946895019096, 67270102239520, 487605585591870, 3092040981805272, 17451258588313354, 88902214572208640, 413569247116248032 (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..14.

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, 7 ] ] (* This Mathematica program contains undefined functions and at present does not work. *)

CROSSREFS

Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056935, A056936, A056937.

Sequence in context: A034620 A146196 A054562 * A238933 A003746 A203408

Adjacent sequences:  A056931 A056932 A056933 * A056935 A056936 A056937

KEYWORD

nonn,easy

AUTHOR

Mitch Harris

STATUS

approved

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Last modified January 22 12:13 EST 2019. Contains 319363 sequences. (Running on oeis4.)