|
| |
|
|
A114715
|
|
Triangle read by rows: number of linear extensions of a 2 X n X m lattice.
|
|
2
| |
|
|
1, 2, 2, 5, 48, 5, 14, 2452, 2452, 14, 42, 183958, 4877756, 183958, 42, 132, 17454844, 20071150430, 20071150430, 17454844, 132, 429, 1941406508, 129586764260850, 6708527580006468, 129586764260850, 1941406508, 429
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
REFERENCES
| Stanley, R., Enumerative Combinatorics, Vol. 2, Proposition 7.10.3 and Vol. 1, Sec 3.5 Chains in Distributive Lattices.
|
|
|
CROSSREFS
| Cf. A114717.
Sequence in context: A076658 A020549 A196128 * A036739 A158311 A158061
Adjacent sequences: A114712 A114713 A114714 * A114716 A114717 A114718
|
|
|
KEYWORD
| nonn,tabl,hard
|
|
|
AUTHOR
| Mitch Harris (Harris.Mitchell (AT) mgh.harvard.edu), Dec 27, 2005
|
| |
|
|
