A370576 - cp's OEIS frontend

A370576 a(n) is the difference between the number of n-dist-increasing and (n-1)-dist-increasing permutations p of [2n], where p is k-dist-increasing if k>=0 and p(i) for all i in [2n-k].

n	a(n)
0	1
1	1
2	5
3	70
4	1960
5	88200
6	5821200
7	529729200
8	63567504000
9	9725828112000
10	1847907341280000
11	426866595835680000
12	117815180450647680000
13	38289933646460496000000
14	14473594918362067488000000
15	6296013789487499357280000000
16	3122822839585799681210880000000

[1, 1, 5, 70, 1960, 88200, 5821200, 529729200, 63567504000, 9725828112000, 1847907341280000, 426866595835680000, 117815180450647680000, 38289933646460496000000, 14473594918362067488000000, 6296013789487499357280000000, 3122822839585799681210880000000]

cp's OEIS Frontend

A370576 a(n) is the difference between the number of n-dist-increasing and (n-1)-dist-increasing permutations p of [2n], where p is k-dist-increasing if k>=0 and p(i) for all i in [2n-k].

Table of values

List of values