A200473 - cp's OEIS frontend

A200473 Irregular triangle read by rows: T(n,k) = number of ways to assign n people to d_k unlabeled groups of equal size (where d_k is the k-th divisor of n).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	1
9	1
10	1
11	1
12	10
13	15
14	1
15	1
16	1
17	1
18	35
19	105
20	1
21	1
22	280
23	1
24	1
25	126
26	945
27	1
28	1
29	1
30	1
31	462
32	5775
33	15400
34	10395
35	1
36	1
37	1
38	1
39	1716
40	135135
41	1
42	1
43	126126
44	1401400
45	1
46	1
47	6435
48	2627625
49	2027025
50	1
51	1
52	1
53	1
54	24310
55	2858856
56	190590400
57	34459425
58	1
59	1

[1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 10, 15, 1, 1, 1, 1, 35, 105, 1, 1, 280, 1, 1, 126, 945, 1, 1, 1, 1, 462, 5775, 15400, 10395, 1, 1, 1, 1, 1716, 135135, 1, 1, 126126, 1401400, 1, 1, 6435, 2627625, 2027025, 1, 1, 1, 1, 24310, 2858856, 190590400, 34459425, 1, 1]

cp's OEIS Frontend

A200473 Irregular triangle read by rows: T(n,k) = number of ways to assign n people to d_k unlabeled groups of equal size (where d_k is the k-th divisor of n).

Table of values

List of values