A308813 - cp's OEIS frontend

A308813 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where A(n,k) is Sum_{d|n} k^(d-1).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	1
11	1
12	4
13	5
14	3
15	1
16	1
17	5
18	10
19	11
20	2
21	1
22	1
23	6
24	17
25	31
26	17
27	4
28	1
29	1
30	7
31	26
32	69
33	82
34	39
35	2
36	1
37	1
38	8
39	37
40	131
41	257
42	256
43	65
44	4
45	1
46	1
47	9
48	50
49	223
50	626
51	1045
52	730
53	139
54	3
55	1
56	1
57	10
58	65
59	351
60	1297
61	3156
62	4097
63	2218
64	261
65	4
66	1

[1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 4, 5, 3, 1, 1, 5, 10, 11, 2, 1, 1, 6, 17, 31, 17, 4, 1, 1, 7, 26, 69, 82, 39, 2, 1, 1, 8, 37, 131, 257, 256, 65, 4, 1, 1, 9, 50, 223, 626, 1045, 730, 139, 3, 1, 1, 10, 65, 351, 1297, 3156, 4097, 2218, 261, 4, 1]

cp's OEIS Frontend

A308813 Square array A(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where A(n,k) is Sum_{d|n} k^(d-1).

Table of values

List of values