A277408 - cp's OEIS frontend

A277408 Triangle, read by rows, where the g.f. of row n equals the sum of permutations of compositions of functions (1 + kyx) for k=1..n with parameter y independent of variable x, as evaluated at x=1.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	6
7	12
8	22
9	36
10	24
11	60
12	140
13	300
14	576
15	120
16	360
17	1020
18	2700
19	6576
20	14400
21	720
22	2520
23	8400
24	26460
25	77952
26	211680
27	518400
28	5040
29	20160
30	77280
31	282240
32	974736
33	3151680
34	9408960
35	25401600
36	40320
37	181440
38	786240
39	3265920
40	12930624
41	48444480
42	170098560
43	552303360
44	1625702400
45	362880
46	1814400
47	8769600
48	40824000
49	182226240
50	775656000
51	3126297600
52	11820816000
53	41391544320
54	131681894400
55	3628800
56	19958400
57	106444800
58	548856000
59	2726317440
60	12989592000
61	59044550400
62	254303280000
63	1028448368640
64	3856920883200
65	13168189440000
66	39916800
67	239500800
68	1397088000
69	7903526400
70	43233886080
71	227885011200
72	1152535824000
73	5563643500800
74	25464033745920
75	109530230261760
76	437429486592000
77	1593350922240000

[1, 1, 1, 2, 3, 4, 6, 12, 22, 36, 24, 60, 140, 300, 576, 120, 360, 1020, 2700, 6576, 14400, 720, 2520, 8400, 26460, 77952, 211680, 518400, 5040, 20160, 77280, 282240, 974736, 3151680, 9408960, 25401600, 40320, 181440, 786240, 3265920, 12930624, 48444480, 170098560, 552303360, 1625702400, 362880, 1814400, 8769600, 40824000, 182226240, 775656000, 3126297600, 11820816000, 41391544320, 131681894400, 3628800, 19958400, 106444800, 548856000, 2726317440, 12989592000, 59044550400, 254303280000, 1028448368640, 3856920883200, 13168189440000, 39916800, 239500800, 1397088000, 7903526400, 43233886080, 227885011200, 1152535824000, 5563643500800, 25464033745920, 109530230261760, 437429486592000, 1593350922240000]

cp's OEIS Frontend

A277408 Triangle, read by rows, where the g.f. of row n equals the sum of permutations of compositions of functions (1 + kyx) for k=1..n with parameter y independent of variable x, as evaluated at x=1.

Table of values

List of values

cp's OEIS Frontend

A277408 Triangle, read by rows, where the g.f. of row n equals the sum of permutations of compositions of functions (1 + k*y*x) for k=1..n with parameter y independent of variable x, as evaluated at x=1.

Table of values

List of values

A277408 Triangle, read by rows, where the g.f. of row n equals the sum of permutations of compositions of functions (1 + kyx) for k=1..n with parameter y independent of variable x, as evaluated at x=1.