A361118 - OEIS

A361118

a(n) = gcd(A360519(n), A360519(n+1)).

1, 2, 5, 7, 3, 4, 5, 11, 3, 2, 7, 11, 3, 5, 2, 11, 13, 3, 4, 7, 13, 5, 2, 17, 7, 9, 2, 13, 17, 3, 2, 19, 5, 3, 4, 11, 17, 5, 2, 23, 3, 19, 4, 13, 3, 5, 2, 29, 3, 31, 2, 7, 3, 37, 2, 17, 3, 41, 2, 5, 23, 7, 12, 5, 29, 7, 2, 3, 43, 5, 2, 3, 47, 5, 2, 3, 7, 19, 2

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, PARI program

FORMULA

a(n) > 1 for any n > 1.

EXAMPLE

a(7) = gcd(A360519(7), A360519(8)) = gcd(20, 55) = 5.

PROG

(PARI) See Links section.