A230251 - cp's OEIS frontend

A230251 Number of permutations of [2n+1] in which the longest increasing run has length n+1.

n	a(n)
0	1
1	4
2	41
3	602
4	11304
5	257400
6	6881160
7	211170960
8	7315701120
9	282398538240
10	12019910112000
11	559278036979200
12	28242651241728000
13	1538394175334016000
14	89912239244860032000
15	5612575361948755200000
16	372687441873534627840000
17	26231028469670851706880000

[1, 4, 41, 602, 11304, 257400, 6881160, 211170960, 7315701120, 282398538240, 12019910112000, 559278036979200, 28242651241728000, 1538394175334016000, 89912239244860032000, 5612575361948755200000, 372687441873534627840000, 26231028469670851706880000]

cp's OEIS Frontend

A230251 Number of permutations of [2n+1] in which the longest increasing run has length n+1.

Table of values

List of values