1,1

a(21) > 12000. [From Donovan Johnson, Dec 18 2009]

Table of n, a(n) for n=1..20.

Index entries for sequences related to factorial numbers

6!-(6-1)!+1 = 601 is prime.

Cf. A049984, A049433.

Sequence in context: A133430 A033071 A306075 * A102516 A156981 A271949

Adjacent sequences: A049429 A049430 A049431 * A049433 A049434 A049435

nonn

Paul Jobling (paul.jobling(AT)whitecross.com)

More terms from Farideh Firoozbakht, Jul 18 2003

a(17)-a(20) from Donovan Johnson, Dec 18 2009

approved