A363812 - cp's OEIS frontend

A363812 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-4-3, and 3-41-2.

n	a(n)
0	1
1	1
2	2
3	6
4	20
5	69
6	243
7	870
8	3159
9	11611
10	43130
11	161691
12	611065
13	2325739
14	8907360
15	34304298
16	132770564
17	516164832
18	2014739748
19	7892775473
20	31022627947
21	122304167437
22	483513636064
23	1916394053725
24	7613498804405
25	30313164090695

[1, 1, 2, 6, 20, 69, 243, 870, 3159, 11611, 43130, 161691, 611065, 2325739, 8907360, 34304298, 132770564, 516164832, 2014739748, 7892775473, 31022627947, 122304167437, 483513636064, 1916394053725, 7613498804405, 30313164090695]

cp's OEIS Frontend

A363812 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-4-3, and 3-41-2.

Table of values

List of values