A056009 - cp's OEIS frontend

A056009 a(n) = (n^n + 1)/ (n^(2^a) + 1), where 2^a is the highest power of 2 dividing n.

n	a(n)
1	1
2	1
3	7
4	1
5	521
6	1261
7	102943
8	1
9	38742049
10	99009901
11	23775972551
12	429960961
13	21633936185161
14	56406126018061
15	27368368148803711
16	1
17	45957792327018709121
18	121065871000912423309
19	98920982783015679456199

[1, 1, 7, 1, 521, 1261, 102943, 1, 38742049, 99009901, 23775972551, 429960961, 21633936185161, 56406126018061, 27368368148803711, 1, 45957792327018709121, 121065871000912423309, 98920982783015679456199]

cp's OEIS Frontend

A056009 a(n) = (n^n + 1)/ (n^(2^a) + 1), where 2^a is the highest power of 2 dividing n.

Table of values

List of values