A324133 - cp's OEIS frontend

A324133 Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 12 and t = 12.

n	a(n)
0	1
1	1
2	2
3	6
4	24
5	114
6	608
7	3554
8	22480
9	152546
10	1103200
11	8456994
12	68411632
13	581745250
14	5183126016
15	48245682338
16	467988498064
17	4720072211938
18	49400302118560
19	535546012710434
20	6004045485933104
21	69507152958422370
22	829789019700511040
23	10202854323325253538
24	129061753086335478736

[1, 1, 2, 6, 24, 114, 608, 3554, 22480, 152546, 1103200, 8456994, 68411632, 581745250, 5183126016, 48245682338, 467988498064, 4720072211938, 49400302118560, 535546012710434, 6004045485933104, 69507152958422370, 829789019700511040, 10202854323325253538, 129061753086335478736]

cp's OEIS Frontend

A324133 Number of permutations of [n] that avoid the shuffle pattern s-k-t, where s = 12 and t = 12.

Table of values

List of values