A177264 - cp's OEIS frontend

A177264 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k as the first entry in the last block (1<=k<=n).

n	a(n)
1	1
2	2
3	0
4	4
5	1
6	1
7	10
8	5
9	5
10	4
11	34
12	23
13	23
14	22
15	18
16	154
17	119
18	119
19	118
20	114
21	96
22	874
23	719
24	719
25	718
26	714
27	696
28	600
29	5914
30	5039
31	5039
32	5038
33	5034
34	5016
35	4920
36	4320
37	46234
38	40319
39	40319
40	40318
41	40314
42	40296
43	40200
44	39600
45	35280
46	409114
47	362879
48	362879
49	362878
50	362874
51	362856
52	362760
53	362160
54	357840
55	322560

[1, 2, 0, 4, 1, 1, 10, 5, 5, 4, 34, 23, 23, 22, 18, 154, 119, 119, 118, 114, 96, 874, 719, 719, 718, 714, 696, 600, 5914, 5039, 5039, 5038, 5034, 5016, 4920, 4320, 46234, 40319, 40319, 40318, 40314, 40296, 40200, 39600, 35280, 409114, 362879, 362879, 362878, 362874, 362856, 362760, 362160, 357840, 322560]

cp's OEIS Frontend

A177264 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k as the first entry in the last block (1<=k<=n).

Table of values

List of values