A068481 - cp's OEIS frontend

A068481 Numbers k such that gcd(k!+1, 2^k+1) > 1.

n	a(n)
1	5
2	9
3	21
4	33
5	65
6	81
7	89
8	113
9	173
10	209
11	221
12	245
13	261
14	281
15	285
16	309
17	341
18	345
19	369
20	393
21	473
22	509
23	525
24	545
25	561
26	593
27	645
28	725
29	749
30	785
31	789
32	833
33	861
34	873
35	933
36	953
37	965
38	1001
39	1065
40	1101
41	1113
42	1173
43	1185
44	1265
45	1289
46	1329
47	1341
48	1401
49	1409
50	1469

[5, 9, 21, 33, 65, 81, 89, 113, 173, 209, 221, 245, 261, 281, 285, 309, 341, 345, 369, 393, 473, 509, 525, 545, 561, 593, 645, 725, 749, 785, 789, 833, 861, 873, 933, 953, 965, 1001, 1065, 1101, 1113, 1173, 1185, 1265, 1289, 1329, 1341, 1401, 1409, 1469]

cp's OEIS Frontend

A068481 Numbers k such that gcd(k!+1, 2^k+1) > 1.

Table of values

List of values