OFFSET
1,2
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..1000
EXAMPLE
gcd(82+1,9-1) = 1 and gcd(82+2,9-2) = 7, so that a(9) = 2.
MATHEMATICA
b[n_] := n^2 + 1; c[n_] := n; Table[m = 1; While[GCD[b[n] + m, c[n] - m] == 1, m++]; m, {n, 150}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jul 24 2012
STATUS
approved