A290669 - OEIS

A290669 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	15
9	15
10	7
11	7
12	31
13	31
14	15
15	15
16	231
17	231
18	127
19	127
20	499
21	499
22	129
23	129
24	1
25	1
26	801
27	801
28	2017
29	2017
30	961
31	961
32	63937
33	63937
34	28801
35	28801
36	129153
37	129153
38	61569
39	61569
40	24743
41	24743
42	2467
43	2467
44	395299
45	395299
46	2467
47	2467
48	59683
49	59683

[1,1,1,1,1,1,1,1,15,15,7,7,31,31,15,15,231,231, 127,127,499,499,129,129,1,1,801,801,2017,2017,961, 961,63937,63937,28801,28801,129153,129153,61569, 61569,24743,24743,2467,2467,395299,395299,2467, 2467,59683,59683]