A087552 - cp's OEIS frontend

A087552 a(1) = 1, then the smallest prime divisor of A065447(n) not included earlier.

n	a(n)
1	1
2	2
3	11
4	5
5	3
6	29
7	101
8	113
9	41
10	271
11	7
12	13
13	239
14	613
15	73
16	137
17	37
18	8291
19	9091
20	157637
21	313
22	21649
23	9901
24	2733970560857
25	53
26	79
27	229
28	4649
29	31
30	13001
31	17
32	19
33	6529
34	664193
35	6781
36	52579
37	1111111111111111111

[1, 2, 11, 5, 3, 29, 101, 113, 41, 271, 7, 13, 239, 613, 73, 137, 37, 8291, 9091, 157637, 313, 21649, 9901, 2733970560857, 53, 79, 229, 4649, 31, 13001, 17, 19, 6529, 664193, 6781, 52579, 1111111111111111111]

cp's OEIS Frontend

A087552 a(1) = 1, then the smallest prime divisor of A065447(n) not included earlier.

Table of values

List of values