A307780 - cp's OEIS frontend

A307780 a(1) = 1; a(n+1) = Sum_{d|n, n/d odd} a(d)^(n/d).

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	3
7	4
8	5
9	5
10	7
11	8
12	9
13	17
14	18
15	19
16	29
17	29
18	30
19	58
20	59
21	91
22	157
23	158
24	159
25	284
26	317
27	318
28	445
29	573
30	574
31	1161
32	1162
33	1162
34	1676
35	1677
36	2830
37	4071
38	4072
39	4073
40	8988
41	12113
42	12114
43	20134
44	20135
45	22183
46	32681
47	32682
48	32683
49	57072
50	73457
51	90265
52	114656
53	122848
54	122849
55	169533

[1, 1, 1, 2, 2, 3, 4, 5, 5, 7, 8, 9, 17, 18, 19, 29, 29, 30, 58, 59, 91, 157, 158, 159, 284, 317, 318, 445, 573, 574, 1161, 1162, 1162, 1676, 1677, 2830, 4071, 4072, 4073, 8988, 12113, 12114, 20134, 20135, 22183, 32681, 32682, 32683, 57072, 73457, 90265, 114656, 122848, 122849, 169533]

cp's OEIS Frontend

A307780 a(1) = 1; a(n+1) = Sum_{d|n, n/d odd} a(d)^(n/d).

Table of values

List of values