A083391 - cp's OEIS frontend

A083391 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	3
4	45
5	45
6	45
7	45
8	45
9	45
10	2145
11	2805
12	92235
13	92235
14	92235
15	92235
16	92235
17	92235
18	529815
19	529815
20	529815
21	529815
22	529815
23	529815
24	529815
25	529815
26	1426425
27	1426425
28	247016055
29	247016055
30	247016055
31	247016055

[3, 3, 45, 45, 45, 45, 45, 45, 2145, 2805, 92235, 92235, 92235, 92235, 92235, 92235, 529815, 529815, 529815, 529815, 529815, 529815, 529815, 529815, 1426425, 1426425, 247016055, 247016055, 247016055, 247016055]

cp's OEIS Frontend

A083391 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