A083556 - cp's OEIS frontend

A083556 n-th Payam number E_{+}(n), defined as the smallest positive odd integer k such that for every positive integer n, the number k*2^n+1 is not divisible by any primes p such that the multiplicative order of 2 mod p is less than or equal to e.

n	a(n)
2	3
3	9
4	15
5	105
6	105
7	105
8	105
9	105
10	165
11	165
12	75075
13	75075
14	75075
15	75075
16	75075
17	75075
18	855855
19	855855
20	5583435
21	5583435
22	5583435
23	18625035
24	18625035
25	18625035
26	18625035
27	18625035
28	27183585
29	27183585
30	27183585
31	27183585
32	27183585

[3, 9, 15, 105, 105, 105, 105, 105, 165, 165, 75075, 75075, 75075, 75075, 75075, 75075, 855855, 855855, 5583435, 5583435, 5583435, 18625035, 18625035, 18625035, 18625035, 18625035, 27183585, 27183585, 27183585, 27183585, 27183585]

cp's OEIS Frontend

A083556 n-th Payam number E_{+}(n), defined as the smallest positive odd integer k such that for every positive integer n, the number k*2^n+1 is not divisible by any primes p such that the multiplicative order of 2 mod p is less than or equal to e.

Table of values

List of values