1,1

Fourteen terms found and primes proved by PrimeForm ([N+1, Brillhart-Lehmer-Selfridge]). There are no more terms <= 2100.

Table of n, a(n) for n=1..14.

3 is a term as 3! * p(3)# - 1 = 3*2*1 * 5*3*2 - 1 = 179, a prime.

Cf. A118222.

Sequence in context: A068334 A283874 A263092 * A212989 A211546 A093514

Adjacent sequences: A118220 A118221 A118222 * A118224 A118225 A118226

nonn

Rick L. Shepherd, Apr 16 2006

approved