|
Search: id:A006362
|
|
|
| A006362 |
|
Antichains (or order ideals) in the poset 2*2*5*n or size of the distributive lattice J(2*2*5*n)
(Formerly M5411)
|
|
+0
9
|
|
| 1, 196, 11196, 307960, 5157098, 60112692, 530962446, 3764727340, 22326282261, 114158490576, 515063238810, 2087929609236, 7714649716552, 26285397502428, 83379798088110, 248202756212336, 697998155989501, 1864955619299196
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
REFERENCES
|
J. Berman and P. Koehler, Cardinalities of finite distributive lattices, Mitteilungen aus dem Mathematischen Seminar Giessen, 121 (1976), 103-124.
G. Kreweras, Les preordres totaux compatibles avec un ordre partiel. Math. Sci. Humaines No. 53 (1976), 5-30.
|
|
LINKS
|
Index entries for sequences related to posets
|
|
MATHEMATICA
|
MatrixPower[ ZetaP[ #, n + 1 ][ [ 1, Card[ # ] ] ]&@JofP[ Chain[ 2, 2, 5 ] ]
|
|
CROSSREFS
|
Cf. A000372, A056932, A006360, A006361, A056933, A056934, A056935, A056936, A056937.
Sequence in context: A061622 A128990 A061619 this_sequence A035834 A114761 A076002
Adjacent sequences: A006359 A006360 A006361 this_sequence A006363 A006364 A006365
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
njas
|
|
EXTENSIONS
|
More terms from Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu), Jul 16 2000
|
|
|
Search completed in 0.002 seconds
|
