A303648 - cp's OEIS frontend

A303648 Number T(n,k) of involutions of [n] having exactly k peaks; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows.

n	a(n)
0	1
1	1
2	2
3	3
4	1
5	4
6	6
7	5
8	18
9	3
10	6
11	44
12	26
13	7
14	91
15	123
16	11
17	8
18	172
19	448
20	136
21	9
22	300
23	1348
24	912
25	51
26	10
27	496
28	3600
29	4552
30	838
31	11
32	781
33	8704
34	18476
35	7441
36	283
37	12
38	1186
39	19584
40	65324
41	48116
42	5930
43	13
44	1742
45	41379
46	206556
47	250375
48	66606
49	1833
50	14
51	2492
52	83210
53	600456
54	1120042
55	536908
56	47358

[1, 1, 2, 3, 1, 4, 6, 5, 18, 3, 6, 44, 26, 7, 91, 123, 11, 8, 172, 448, 136, 9, 300, 1348, 912, 51, 10, 496, 3600, 4552, 838, 11, 781, 8704, 18476, 7441, 283, 12, 1186, 19584, 65324, 48116, 5930, 13, 1742, 41379, 206556, 250375, 66606, 1833, 14, 2492, 83210, 600456, 1120042, 536908, 47358]

cp's OEIS Frontend

A303648 Number T(n,k) of involutions of [n] having exactly k peaks; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows.

Table of values

List of values