1,1

Table of n, a(n) for n=1..35.

(PARI) is(n)=ispseudoprime(12321<<n+1) \\ Charles R Greathouse IV, Jun 13 2017

Sequence in context: A137980 A144137 A238222 * A176900 A166727 A229295

Adjacent sequences: A180921 A180922 A180923 * A180925 A180926 A180927

nonn

Jason Earls, Sep 25 2010

approved