A068480 - cp's OEIS frontend

A068480 Numbers n such that gcd(n!-1,2^n+1)>1.

n	a(n)
1	1
2	29
3	41
4	53
5	69
6	105
7	125
8	141
9	153
10	165
11	189
12	233
13	249
14	273
15	293
16	321
17	329
18	405
19	413
20	429
21	441
22	453
23	485
24	581
25	585
26	629
27	641
28	653
29	713
30	729
31	741
32	761
33	765
34	809
35	813
36	849
37	893
38	905
39	989
40	993
41	1005
42	1013
43	1041
44	1049
45	1089
46	1121
47	1125
48	1133
49	1169
50	1205

[1, 29, 41, 53, 69, 105, 125, 141, 153, 165, 189, 233, 249, 273, 293, 321, 329, 405, 413, 429, 441, 453, 485, 581, 585, 629, 641, 653, 713, 729, 741, 761, 765, 809, 813, 849, 893, 905, 989, 993, 1005, 1013, 1041, 1049, 1089, 1121, 1125, 1133, 1169, 1205]

cp's OEIS Frontend

A068480 Numbers n such that gcd(n!-1,2^n+1)>1.

Table of values

List of values