A136123 - cp's OEIS frontend

A136123 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k maximal strings of increasing consecutive integers (0<=k<=floor(n/2)).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	3
6	11
7	12
8	1
9	53
10	56
11	11
12	309
13	321
14	87
15	3
16	2119
17	2175
18	693
19	53
20	16687
21	17008
22	5934
23	680
24	11
25	148329
26	150504
27	55674
28	8064
29	309
30	1468457
31	1485465
32	572650
33	96370
34	5805
35	53
36	16019531
37	16170035
38	6429470
39	1200070
40	95575
41	2119

[1, 1, 1, 1, 3, 3, 11, 12, 1, 53, 56, 11, 309, 321, 87, 3, 2119, 2175, 693, 53, 16687, 17008, 5934, 680, 11, 148329, 150504, 55674, 8064, 309, 1468457, 1485465, 572650, 96370, 5805, 53, 16019531, 16170035, 6429470, 1200070, 95575, 2119]

cp's OEIS Frontend

A136123 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k maximal strings of increasing consecutive integers (0<=k<=floor(n/2)).

Table of values

List of values