A308690 - cp's OEIS frontend

A308690 Square array A(n,k), n >= 1, k >= 0, where A(n,k) = Sum_{d|n} d^(k*n/d - k + 1), read by antidiagonals.

n	a(n)
1	1
2	1
3	3
4	1
5	3
6	4
7	1
8	3
9	4
10	7
11	1
12	3
13	4
14	9
15	6
16	1
17	3
18	4
19	13
20	6
21	12
22	1
23	3
24	4
25	21
26	6
27	24
28	8
29	1
30	3
31	4
32	37
33	6
34	66
35	8
36	15
37	1
38	3
39	4
40	69
41	6
42	216
43	8
44	41
45	13
46	1
47	3
48	4
49	133
50	6
51	762
52	8
53	201
54	37
55	18
56	1
57	3
58	4
59	261
60	6
61	2784
62	8
63	1289
64	253
65	68
66	12
67	1
68	3
69	4
70	517
71	6
72	10386
73	8
74	9225
75	2197
76	648
77	12
78	28

[1, 1, 3, 1, 3, 4, 1, 3, 4, 7, 1, 3, 4, 9, 6, 1, 3, 4, 13, 6, 12, 1, 3, 4, 21, 6, 24, 8, 1, 3, 4, 37, 6, 66, 8, 15, 1, 3, 4, 69, 6, 216, 8, 41, 13, 1, 3, 4, 133, 6, 762, 8, 201, 37, 18, 1, 3, 4, 261, 6, 2784, 8, 1289, 253, 68, 12, 1, 3, 4, 517, 6, 10386, 8, 9225, 2197, 648, 12, 28]

cp's OEIS Frontend

A308690 Square array A(n,k), n >= 1, k >= 0, where A(n,k) = Sum_{d|n} d^(k*n/d - k + 1), read by antidiagonals.

Table of values

List of values