A262135 - cp's OEIS frontend

A262135 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 10.

n	a(n)
0	1
1	1
2	1
3	3
4	9
5	45
6	225
7	1575
8	11025
9	99225
10	893025
11	9823275
12	108056024
13	1404728312
14	18261451790
15	273921776850
16	4108787293579
17	69849383990843
18	1187387325581683
19	22560359186051977
20	428591632052426778
21	9000424273100962338
22	188954690005716285164

[1, 1, 1, 3, 9, 45, 225, 1575, 11025, 99225, 893025, 9823275, 108056024, 1404728312, 18261451790, 273921776850, 4108787293579, 69849383990843, 1187387325581683, 22560359186051977, 428591632052426778, 9000424273100962338, 188954690005716285164]

cp's OEIS Frontend

A262135 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 10.

Table of values

List of values