A316391 - cp's OEIS frontend

A316391 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of four.

n	a(n)
4	1
5	4
6	62
7	340
8	4734
9	33855
10	495371
11	4403025
12	70083872
13	746704117
14	13023762276
15	161905131484
16	3091115525637
17	43928623624790
18	914530883776894
19	14623431780216366
20	330413968185491070
21	5870376151413374683
22	143271256595612492851
23	2799645366893284489691

[1, 4, 62, 340, 4734, 33855, 495371, 4403025, 70083872, 746704117, 13023762276, 161905131484, 3091115525637, 43928623624790, 914530883776894, 14623431780216366, 330413968185491070, 5870376151413374683, 143271256595612492851, 2799645366893284489691]

cp's OEIS Frontend

A316391 Number of permutations p of [n] such that the up-down signature of 0,p has nonnegative partial sums with a maximal value of four.

Table of values

List of values