A131203 - cp's OEIS frontend

A131203 Number of cycles of length n under the mapping x -> x^2-2 modulo Fermat prime 2^(2^m)+1, where m is any fixed integer such that n divides 2^m-1.

n	a(n)
0	1
1	1
2	3
3	9
4	28
5	93
6	315
7	1091
8	3855
9	13797
10	49929
11	182361
12	671088
13	2485504
14	9256395
15	34636833
16	130150493
17	490853403
18	1857283155
19	7048151355
20	26817356775
21	102280151421
22	390937467284
23	1497207322929
24	5744387279808
25	22076468760335

[1, 1, 3, 9, 28, 93, 315, 1091, 3855, 13797, 49929, 182361, 671088, 2485504, 9256395, 34636833, 130150493, 490853403, 1857283155, 7048151355, 26817356775, 102280151421, 390937467284, 1497207322929, 5744387279808, 22076468760335]

cp's OEIS Frontend

A131203 Number of cycles of length n under the mapping x -> x^2-2 modulo Fermat prime 2^(2^m)+1, where m is any fixed integer such that n divides 2^m-1.

Table of values

List of values