A324139 - cp's OEIS frontend

A324139 Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 132 and t = 132.

n	a(n)
0	1
1	1
2	2
3	6
4	24
5	120
6	720
7	5020
8	39720
9	350496
10	3404208
11	36024468
12	412029720
13	5060178264
14	66366899712
15	925327730484
16	13661323157928
17	212844811207536
18	3489053207930640
19	60017166553937508
20	1080783290762095320
21	20331614843059904712
22	398783856019074779808
23	8140910725545925463172

[1, 1, 2, 6, 24, 120, 720, 5020, 39720, 350496, 3404208, 36024468, 412029720, 5060178264, 66366899712, 925327730484, 13661323157928, 212844811207536, 3489053207930640, 60017166553937508, 1080783290762095320, 20331614843059904712, 398783856019074779808, 8140910725545925463172]

cp's OEIS Frontend

A324139 Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 132 and t = 132.

Table of values

List of values