A286880 - cp's OEIS frontend

A286880 Square array A(n,k), n>=0, k>=1, read by antidiagonals, where row n is the sum of n-th powers of unitary divisors of k (divisors d such that gcd(d, k/d) = 1).

n	a(n)
0	1
1	2
2	1
3	2
4	3
5	1
6	2
7	4
8	5
9	1
10	2
11	5
12	10
13	9
14	1
15	4
16	6
17	17
18	28
19	17
20	1
21	2
22	12
23	26
24	65
25	82
26	33
27	1
28	2
29	8
30	50
31	126
32	257
33	244
34	65
35	1
36	2
37	9
38	50
39	252
40	626
41	1025
42	730
43	129
44	1
45	4
46	10
47	65
48	344
49	1394
50	3126
51	4097
52	2188
53	257
54	1
55	2
56	18
57	82
58	513
59	2402
60	8052
61	15626
62	16385
63	6562
64	513
65	1
66	4
67	12
68	130
69	730
70	4097
71	16808
72	47450
73	78126
74	65537
75	19684
76	1025
77	1

[1, 2, 1, 2, 3, 1, 2, 4, 5, 1, 2, 5, 10, 9, 1, 4, 6, 17, 28, 17, 1, 2, 12, 26, 65, 82, 33, 1, 2, 8, 50, 126, 257, 244, 65, 1, 2, 9, 50, 252, 626, 1025, 730, 129, 1, 4, 10, 65, 344, 1394, 3126, 4097, 2188, 257, 1, 2, 18, 82, 513, 2402, 8052, 15626, 16385, 6562, 513, 1, 4, 12, 130, 730, 4097, 16808, 47450, 78126, 65537, 19684, 1025, 1]

cp's OEIS Frontend

A286880 Square array A(n,k), n>=0, k>=1, read by antidiagonals, where row n is the sum of n-th powers of unitary divisors of k (divisors d such that gcd(d, k/d) = 1).

Table of values

List of values