A230342 - cp's OEIS frontend

A230342 Number of permutations of [2n+2] in which the longest increasing run has length n+2.

n	a(n)
0	1
1	6
2	67
3	1024
4	19710
5	456720
6	12372360
7	383685120
8	13406178240
9	521194867200
10	22318001798400
11	1043827513344000
12	52949040240096000
13	2895555891900672000
14	169823181579891840000
15	10633812541718446080000
16	708077586604965857280000
17	49962245750984840232960000

[1, 6, 67, 1024, 19710, 456720, 12372360, 383685120, 13406178240, 521194867200, 22318001798400, 1043827513344000, 52949040240096000, 2895555891900672000, 169823181579891840000, 10633812541718446080000, 708077586604965857280000, 49962245750984840232960000]

cp's OEIS Frontend

A230342 Number of permutations of [2n+2] in which the longest increasing run has length n+2.

Table of values

List of values