A275528 - cp's OEIS frontend

A275528 Prime factors of numbers of the form 4^(2^m) - 2^(2^m) + 1 with m >= 0.

n	a(n)
1	3
2	13
3	97
4	193
5	241
6	673
7	769
8	12289
9	786433
10	22253377
11	39714817
12	152371201
13	597688321
14	1107296257
15	3221225473
16	7348420609
17	11560943617
18	29796335617
19	74490839041
20	77309411329
21	206158430209
22	246423748609
23	448203325441
24	2422022479873
25	5469640851457
26	28114855919617

[3, 13, 97, 193, 241, 673, 769, 12289, 786433, 22253377, 39714817, 152371201, 597688321, 1107296257, 3221225473, 7348420609, 11560943617, 29796335617, 74490839041, 77309411329, 206158430209, 246423748609, 448203325441, 2422022479873, 5469640851457, 28114855919617]

cp's OEIS Frontend

A275528 Prime factors of numbers of the form 4^(2^m) - 2^(2^m) + 1 with m >= 0.

Table of values

List of values