A360107 - cp's OEIS frontend

A360107 Numbers k such that sigma_2(Fibonacci(k)^2 + 1) == 0 (mod Fibonacci(k)).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	11
8	13
9	15
10	19
11	21
12	25
13	27
14	31
15	41
16	45
17	49
18	81
19	85
20	129
21	133
22	135
23	139
24	357
25	361
26	429
27	431
28	433
29	435
30	447
31	451
32	507
33	511
34	567
35	569
36	571
37	573

[1, 2, 3, 5, 7, 9, 11, 13, 15, 19, 21, 25, 27, 31, 41, 45, 49, 81, 85, 129, 133, 135, 139, 357, 361, 429, 431, 433, 435, 447, 451, 507, 511, 567, 569, 571, 573]

cp's OEIS Frontend

A360107 Numbers k such that sigma_2(Fibonacci(k)^2 + 1) == 0 (mod Fibonacci(k)).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	11
8	13
9	15
10	19
11	21
12	25
13	27
14	31
15	41
16	45
17	49
18	81
19	85
20	129
21	133
22	135
23	139
24	357
25	361
26	429
27	431
28	433
29	435
30	447
31	451
32	507
33	511
34	567
35	569
36	571
37	573

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	11
8	13
9	15
10	19
11	21
12	25
13	27
14	31
15	41
16	45
17	49
18	81
19	85
20	129
21	133
22	135
23	139
24	357
25	361
26	429
27	431
28	433
29	435
30	447
31	451
32	507
33	511
34	567
35	569
36	571
37	573

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	9
7	11
8	13
9	15
10	19
11	21
12	25
13	27
14	31
15	41
16	45
17	49
18	81
19	85
20	129
21	133
22	135
23	139
24	357
25	361
26	429
27	431
28	433
29	435
30	447
31	451
32	507
33	511
34	567
35	569
36	571
37	573