A181415 - cp's OEIS frontend

A181415 Irregular triangle a(n,k) = A049009(n,k)/n, read by rows 1<=k<=A000041(n).

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	2
7	1
8	12
9	9
10	36
11	6
12	1
13	20
14	40
15	120
16	180
17	240
18	24
19	1
20	30
21	75
22	50
23	300
24	1200
25	300
26	1200
27	2700
28	1800
29	120
30	1
31	42
32	126
33	210
34	630
35	3150
36	2100
37	3150
38	4200
39	25200
40	12600
41	12600
42	37800
43	15120
44	720
45	1
46	56
47	196
48	392
49	245
50	1176
51	7056
52	11760
53	8820
54	11760
55	11760
56	88200

[1, 1, 1, 1, 6, 2, 1, 12, 9, 36, 6, 1, 20, 40, 120, 180, 240, 24, 1, 30, 75, 50, 300, 1200, 300, 1200, 2700, 1800, 120, 1, 42, 126, 210, 630, 3150, 2100, 3150, 4200, 25200, 12600, 12600, 37800, 15120, 720, 1, 56, 196, 392, 245, 1176, 7056, 11760, 8820, 11760, 11760, 88200]

cp's OEIS Frontend

A181415 Irregular triangle a(n,k) = A049009(n,k)/n, read by rows 1<=k<=A000041(n).

Table of values

List of values