A114715 - cp's OEIS frontend

A114715 Number A(n,m) of linear extensions of a 2 X n X m lattice; square array A(n,m), n>=1, m>=1, read by antidiagonals.

n	a(n)
1	1
2	2
3	2
4	5
5	48
6	5
7	14
8	2452
9	2452
10	14
11	42
12	183958
13	4877756
14	183958
15	42
16	132
17	17454844
18	20071150430
19	20071150430
20	17454844
21	132
22	429
23	1941406508
24	129586764260850
25	6708527580006468
26	129586764260850
27	1941406508
28	429

[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]

cp's OEIS Frontend

A114715 Number A(n,m) of linear extensions of a 2 X n X m lattice; square array A(n,m), n>=1, m>=1, read by antidiagonals.

Table of values

List of values