A262130 - cp's OEIS frontend

A262130 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 5.

n	a(n)
0	1
1	1
2	1
3	3
4	9
5	45
6	225
7	1574
8	11017
9	98702
10	887795
11	9657563
12	106067481
13	1353914186
14	17550071995
15	256827579219
16	3835324609489
17	63272134122021
18	1069057522350991
19	19628634717955199
20	370023070383398685
21	7484704516983935936
22	155675234416541005945

[1, 1, 1, 3, 9, 45, 225, 1574, 11017, 98702, 887795, 9657563, 106067481, 1353914186, 17550071995, 256827579219, 3835324609489, 63272134122021, 1069057522350991, 19628634717955199, 370023070383398685, 7484704516983935936, 155675234416541005945]

cp's OEIS Frontend

A262130 Number of permutations p of [n] such that the up-down signature of p has nonnegative partial sums with a maximal value <= 5.

Table of values

List of values