A092741 - cp's OEIS frontend

A092741 Triangle read by rows: T(n,k) is the number of permutations p of [n] in which the length of the longest initial segment avoiding both the 132- and the 321-pattern is equal to k.

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	4
7	0
8	8
9	9
10	7
11	0
12	40
13	45
14	24
15	11
16	0
17	240
18	270
19	144
20	50
21	16
22	0
23	1680
24	1890
25	1008
26	350
27	90
28	22
29	0
30	13440
31	15120
32	8064
33	2800
34	720
35	147
36	29
37	0
38	120960
39	136080
40	72576
41	25200
42	6480
43	1323
44	224
45	37
46	0
47	1209600
48	1360800
49	725760
50	252000
51	64800
52	13230

[1, 0, 2, 0, 2, 4, 0, 8, 9, 7, 0, 40, 45, 24, 11, 0, 240, 270, 144, 50, 16, 0, 1680, 1890, 1008, 350, 90, 22, 0, 13440, 15120, 8064, 2800, 720, 147, 29, 0, 120960, 136080, 72576, 25200, 6480, 1323, 224, 37, 0, 1209600, 1360800, 725760, 252000, 64800, 13230]

cp's OEIS Frontend

A092741 Triangle read by rows: T(n,k) is the number of permutations p of [n] in which the length of the longest initial segment avoiding both the 132- and the 321-pattern is equal to k.

Table of values

List of values