A357099 Second nontrivial square root of unity mod A033949(n), i.e., second smallest x > 1 such that x^2 == 1 mod the n-th positive integer that does not have a primitive root.

5, 7, 11, 9, 11, 13, 7, 15, 19, 17, 23, 29, 19, 25, 11, 29, 23, 26, 17, 35, 27, 34, 15, 37, 19, 55, 33, 51, 43, 35, 47, 41, 19, 49, 39, 43, 53, 31, 29, 69, 59, 23, 71, 64, 47, 61, 56, 31, 89, 51, 67, 27, 34, 55, 89, 73, 41, 77, 91, 59, 64, 69, 19, 83, 63, 71

Offset: 1

Author

Alois P. Heinz, Oct 25 2022

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..20000

Crossrefs

Column k=2 of A277776.

Cf. A033949, A082568.

Programs

Python

from itertools import count, chain, islice
from sympy.ntheory import sqrt_mod_iter
def A357099_gen(): # generator of terms
    return chain.from_iterable((sorted(filter(lambda m:1A357099_list = list(islice(A357099_gen(),30)) # Chai Wah Wu, Oct 26 2022