A363813 - cp's OEIS frontend

A363813 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-4-3, and 4-5-3-1-2.

n	a(n)
0	1
1	1
2	2
3	6
4	21
5	78
6	295
7	1114
8	4166
9	15390
10	56167
11	202738
12	724813
13	2570276
14	9052494
15	31702340
16	110503497
17	383691578
18	1328039043
19	4584708230
20	15793983638
21	54315199642
22	186526735307
23	639831906594
24	2192754259993
25	7509139583560
26	25699765092254
27	87913948206096

[1, 1, 2, 6, 21, 78, 295, 1114, 4166, 15390, 56167, 202738, 724813, 2570276, 9052494, 31702340, 110503497, 383691578, 1328039043, 4584708230, 15793983638, 54315199642, 186526735307, 639831906594, 2192754259993, 7509139583560, 25699765092254, 87913948206096]

cp's OEIS Frontend

A363813 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-4-3, and 4-5-3-1-2.

Table of values

List of values