A010027 - cp's OEIS frontend

A010027 Triangle read by rows: T(n,k) is the number of permutations of [n] having k consecutive ascending pairs (0 <= k <= n-1).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	3
7	1
8	3
9	9
10	11
11	1
12	4
13	18
14	44
15	53
16	1
17	5
18	30
19	110
20	265
21	309
22	1
23	6
24	45
25	220
26	795
27	1854
28	2119
29	1
30	7
31	63
32	385
33	1855
34	6489
35	14833
36	16687
37	1
38	8
39	84
40	616
41	3710
42	17304
43	59332
44	133496
45	148329
46	1
47	9
48	108
49	924
50	6678
51	38934
52	177996
53	600732
54	1334961
55	1468457
56	1

[1, 1, 1, 1, 2, 3, 1, 3, 9, 11, 1, 4, 18, 44, 53, 1, 5, 30, 110, 265, 309, 1, 6, 45, 220, 795, 1854, 2119, 1, 7, 63, 385, 1855, 6489, 14833, 16687, 1, 8, 84, 616, 3710, 17304, 59332, 133496, 148329, 1, 9, 108, 924, 6678, 38934, 177996, 600732, 1334961, 1468457, 1]

cp's OEIS Frontend

A010027 Triangle read by rows: T(n,k) is the number of permutations of [n] having k consecutive ascending pairs (0 <= k <= n-1).

Table of values

List of values