A273949 - cp's OEIS frontend

A273949 Odd prime factors of generalized Fermat numbers of the form 11^(2^m) + 1 with m >= 0.

n	a(n)
1	3
2	17
3	61
4	193
5	257
6	7321
7	15361
8	51329
9	65537
10	163841
11	6304673
12	15190529
13	70254593
14	1691123713
15	1760464897
16	3221225473
17	3489660929
18	4696846849
19	6874464257
20	53401878529
21	111489577217
22	149300051969
23	184683593729
24	206158430209
25	447600088289
26	1819992391681

[3, 17, 61, 193, 257, 7321, 15361, 51329, 65537, 163841, 6304673, 15190529, 70254593, 1691123713, 1760464897, 3221225473, 3489660929, 4696846849, 6874464257, 53401878529, 111489577217, 149300051969, 184683593729, 206158430209, 447600088289, 1819992391681]

cp's OEIS Frontend

A273949 Odd prime factors of generalized Fermat numbers of the form 11^(2^m) + 1 with m >= 0.

Table of values

List of values