Primes of the form k!! + k + 1.A118743Primes of the form k!! + k + 1.Terms a(0) =3a(1) =5a(2) =7a(3) =13a(4) =113a(5) =3851a(6) =46093a(7) =10321937a(8) =185794579External referencesoeis: A118743