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A056935 Antichains (or order ideals) in the poset 2*3*3*n or size of the distributive lattice J(2*3*3*n) 8
1, 175, 8790, 211250, 3092808, 31635580, 246441430, 1549486490, 8192995479, 37548347569, 152602439244, 559835910940, 1880152558980, 5846268790220, 16988036626948, 46486024648180, 120562654732065, 297976456047575 (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..17.

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, 3, 3 ] ] (* This Mathematica program contains undefined functions and at present does not work. *)

CROSSREFS

Cf. A000372, A006360, A006361, A006362, A056932, A056933, A056934, A056936, A056937.

Sequence in context: A186212 A222774 A209710 * A239429 A268872 A104651

Adjacent sequences:  A056932 A056933 A056934 * A056936 A056937 A056938

KEYWORD

nonn,easy

AUTHOR

Mitch Harris

STATUS

approved

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Last modified November 15 15:59 EST 2018. Contains 317239 sequences. (Running on oeis4.)