OFFSET
1,3
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..65537
EXAMPLE
a(9) = gcd(2^9 + 1,9^2) = gcd(513,81) = 27.
MAPLE
seq(gcd(2^n+1, n^2), n=1..100); # Muniru A Asiru, Sep 22 2018
PROG
(PARI) A087968(n) = gcd((2^n)+1, n^2); \\ Antti Karttunen, Sep 22 2018
(GAP) List([1..100], n->Gcd(2^n+1, n^2)); # Muniru A Asiru, Sep 22 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Sep 22 2003
STATUS
approved