A363811 - cp's OEIS frontend

A363811 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-3-5-4, and 4-5-3-1-2.

n	a(n)
0	1
1	1
2	2
3	6
4	22
5	88
6	362
7	1488
8	6034
9	24024
10	93830
11	359824
12	1357088
13	5043260
14	18501562
15	67120024
16	241169322
17	859450004
18	3041415520
19	10699090888
20	37448249502
21	130518538696
22	453276141238
23	1569476495000
24	5420784841936
25	18683861676756
26	64286814548706

[1, 1, 2, 6, 22, 88, 362, 1488, 6034, 24024, 93830, 359824, 1357088, 5043260, 18501562, 67120024, 241169322, 859450004, 3041415520, 10699090888, 37448249502, 130518538696, 453276141238, 1569476495000, 5420784841936, 18683861676756, 64286814548706]

cp's OEIS Frontend

A363811 Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-1-3-5-4, and 4-5-3-1-2.

Table of values

List of values