A228708 - cp's OEIS frontend

A228708 Triangle T(n,k) read by rows: T(n,k) = number of permutations on 123...n with exactly one abc pattern and no aj pattern with j<=k, for n>=0, 0<=k<=n.

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	1
7	1
8	0
9	0
10	6
11	6
12	2
13	0
14	0
15	27
16	27
17	12
18	3
19	0
20	0
21	110
22	110
23	55
24	19
25	4
26	0
27	0
28	429
29	429
30	229
31	91
32	27
33	5
34	0
35	0
36	1638
37	1638
38	912
39	393
40	136
41	36
42	6
43	0
44	0
45	6188
46	6188
47	3549
48	1614
49	612
50	191
51	46
52	7
53	0
54	0
55	23256
56	23256
57	13636
58	6447
59	2601
60	897
61	257
62	57
63	8
64	0
65	0

[0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 6, 6, 2, 0, 0, 27, 27, 12, 3, 0, 0, 110, 110, 55, 19, 4, 0, 0, 429, 429, 229, 91, 27, 5, 0, 0, 1638, 1638, 912, 393, 136, 36, 6, 0, 0, 6188, 6188, 3549, 1614, 612, 191, 46, 7, 0, 0, 23256, 23256, 13636, 6447, 2601, 897, 257, 57, 8, 0, 0]

cp's OEIS Frontend

A228708 Triangle T(n,k) read by rows: T(n,k) = number of permutations on 123...n with exactly one abc pattern and no aj pattern with j<=k, for n>=0, 0<=k<=n.

Table of values

List of values