A184180 - cp's OEIS frontend

A184180 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} whose shortest block is of length k (1 <= k <= n). A block of a permutation is a maximal sequence of consecutive integers which appear in consecutive positions. For example, the permutation 4512367 has 3 blocks: 45, 123, and 67. Its shortest block has length 2.

n	a(n)
1	1
2	1
3	1
4	5
5	0
6	1
7	22
8	1
9	0
10	1
11	117
12	2
13	0
14	0
15	1
16	713
17	5
18	1
19	0
20	0
21	1
22	5026
23	11
24	2
25	0
26	0
27	0
28	1
29	40285
30	31
31	2
32	1
33	0
34	0
35	0
36	1
37	362799
38	73
39	5
40	2
41	0
42	0
43	0
44	0
45	1
46	3628584
47	201
48	11
49	2
50	1
51	0
52	0
53	0
54	0
55	1
56	39916243
57	532
58	20
59	2
60	2
61	0
62	0
63	0
64	0
65	0
66	1
67	479000017
68	1534
69	40
70	5
71	2
72	1
73	0
74	0
75	0
76	0
77	0
78	1
79	6227016356
80	4346
81	82
82	11
83	2
84	2
85	0
86	0
87	0
88	0
89	0
90	0
91	1

[1, 1, 1, 5, 0, 1, 22, 1, 0, 1, 117, 2, 0, 0, 1, 713, 5, 1, 0, 0, 1, 5026, 11, 2, 0, 0, 0, 1, 40285, 31, 2, 1, 0, 0, 0, 1, 362799, 73, 5, 2, 0, 0, 0, 0, 1, 3628584, 201, 11, 2, 1, 0, 0, 0, 0, 1, 39916243, 532, 20, 2, 2, 0, 0, 0, 0, 0, 1, 479000017, 1534, 40, 5, 2, 1, 0, 0, 0, 0, 0, 1, 6227016356, 4346, 82, 11, 2, 2, 0, 0, 0, 0, 0, 0, 1]

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