A260665 - cp's OEIS frontend

A260665 Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the generalized pattern 12-3; triangle T(n,k), n>=0, 0<=k<=(n-1)*(n-2)/2-[n=0], read by rows.

n	a(n)
0	1
1	1
2	2
3	5
4	1
5	15
6	7
7	1
8	1
9	52
10	39
11	13
12	12
13	2
14	1
15	1
16	203
17	211
18	112
19	103
20	41
21	24
22	17
23	5
24	2
25	1
26	1
27	877
28	1168
29	843
30	811
31	492
32	337
33	238
34	122
35	68
36	39
37	28
38	8
39	5
40	2
41	1
42	1
43	4140
44	6728
45	6089
46	6273
47	4851
48	3798
49	2956
50	1960
51	1303
52	859
53	594
54	314
55	204
56	110
57	64
58	43
59	17
60	8
61	5
62	2
63	1
64	1

[1, 1, 2, 5, 1, 15, 7, 1, 1, 52, 39, 13, 12, 2, 1, 1, 203, 211, 112, 103, 41, 24, 17, 5, 2, 1, 1, 877, 1168, 843, 811, 492, 337, 238, 122, 68, 39, 28, 8, 5, 2, 1, 1, 4140, 6728, 6089, 6273, 4851, 3798, 2956, 1960, 1303, 859, 594, 314, 204, 110, 64, 43, 17, 8, 5, 2, 1, 1]

cp's OEIS Frontend

A260665 Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the generalized pattern 12-3; triangle T(n,k), n>=0, 0<=k<=(n-1)*(n-2)/2-[n=0], read by rows.

Table of values

List of values