A177262 - cp's OEIS frontend

A177262 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} starting with exactly k consecutive integers (1<=k<=n).

n	a(n)
1	1
2	1
3	1
4	4
5	1
6	1
7	18
8	4
9	1
10	1
11	96
12	18
13	4
14	1
15	1
16	600
17	96
18	18
19	4
20	1
21	1
22	4320
23	600
24	96
25	18
26	4
27	1
28	1
29	35280
30	4320
31	600
32	96
33	18
34	4
35	1
36	1
37	322560
38	35280
39	4320
40	600
41	96
42	18
43	4
44	1
45	1
46	3265920
47	322560
48	35280
49	4320
50	600
51	96
52	18
53	4
54	1
55	1
56	36288000
57	3265920
58	322560
59	35280
60	4320
61	600
62	96
63	18
64	4
65	1
66	1

[1, 1, 1, 4, 1, 1, 18, 4, 1, 1, 96, 18, 4, 1, 1, 600, 96, 18, 4, 1, 1, 4320, 600, 96, 18, 4, 1, 1, 35280, 4320, 600, 96, 18, 4, 1, 1, 322560, 35280, 4320, 600, 96, 18, 4, 1, 1, 3265920, 322560, 35280, 4320, 600, 96, 18, 4, 1, 1, 36288000, 3265920, 322560, 35280, 4320, 600, 96, 18, 4, 1, 1]

cp's OEIS Frontend

A177262 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} starting with exactly k consecutive integers (1<=k<=n).

Table of values

List of values