A262167 - cp's OEIS frontend

A262167 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value <= 5.

n	a(n)
0	1
1	1
2	2
3	5
4	20
5	87
6	521
7	3264
8	25899
9	212534
10	2092218
11	21250451
12	249294149
13	3018733862
14	41077515364
15	577524896681
16	8940290166542
17	143098583946093
18	2483312451690110
19	44571301924473611
20	857112705946351481
21	17044616630699383294
22	359813788663496645489

[1, 1, 2, 5, 20, 87, 521, 3264, 25899, 212534, 2092218, 21250451, 249294149, 3018733862, 41077515364, 577524896681, 8940290166542, 143098583946093, 2483312451690110, 44571301924473611, 857112705946351481, 17044616630699383294, 359813788663496645489]

cp's OEIS Frontend

A262167 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value <= 5.

Table of values

List of values