1,2

For n > 1, a(n) is even.

Table of n, a(n) for n=1..6.

66 is in the sequence because 1.2.3...65.66 + prime(66) is prime.

Sequence in context: A067737 A217218 A111494 * A250329 A242515 A156812

Adjacent sequences: A092022 A092023 A092024 * A092026 A092027 A092028

more,nonn,base

Farideh Firoozbakht, Feb 19 2004

Edited by Charles R Greathouse IV, Apr 29 2010

a(6) from Max Alekseyev, Jan 28 2012

approved