1,1

4*4!+1=97, a prime.

(PARI) for(n=1, 55, if(isprime(4*n!+1), print(4*n!+1)))

Sequence in context: A139950 A102734 A117341 this_sequence A053980 A088995 A093749

Adjacent sequences: A062535 A062536 A062537 this_sequence A062539 A062540 A062541

nonn

Jason Earls (zevi_35711(AT)yahoo.com), Jul 10 2001