A309280 - cp's OEIS frontend

A309280 T(n,k) is (1/k) times the sum of the elements of all subsets of [n] whose sum is divisible by k; triangle T(n,k), n >= 1, 1 <= k <= n*(n+1)/2, read by rows.

n	a(n)
1	1
2	6
3	1
4	1
5	24
6	6
7	4
8	1
9	1
10	1
11	80
12	20
13	9
14	4
15	4
16	2
17	2
18	1
19	1
20	1
21	240
22	60
23	30
24	14
25	12
26	7
27	5
28	3
29	3
30	3
31	2
32	2
33	1
34	1
35	1
36	672
37	168
38	84
39	42
40	29
41	20
42	15
43	10
44	9
45	7
46	5
47	5
48	4
49	4
50	4
51	3
52	2
53	2
54	1
55	1
56	1
57	1792
58	448
59	202
60	112
61	71
62	49
63	40
64	27
65	23
66	17
67	15
68	12
69	10
70	10
71	8
72	8
73	7
74	7
75	6
76	5
77	5
78	4
79	3
80	2
81	2
82	1
83	1
84	1

[1, 6, 1, 1, 24, 6, 4, 1, 1, 1, 80, 20, 9, 4, 4, 2, 2, 1, 1, 1, 240, 60, 30, 14, 12, 7, 5, 3, 3, 3, 2, 2, 1, 1, 1, 672, 168, 84, 42, 29, 20, 15, 10, 9, 7, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1792, 448, 202, 112, 71, 49, 40, 27, 23, 17, 15, 12, 10, 10, 8, 8, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1]

cp's OEIS Frontend

A309280 T(n,k) is (1/k) times the sum of the elements of all subsets of [n] whose sum is divisible by k; triangle T(n,k), n >= 1, 1 <= k <= n*(n+1)/2, read by rows.

Table of values

List of values