A061025 a(n) = prime(n-1)! * prime(n)!.

12, 720, 604800, 201180672000, 248562743869440000, 2214873013052296396800000, 43267632904897132203343872000000, 3144771171972468579262286769684480000000, 228577379063395778964892338453378050021130240000000000, 72704382293164078453845555006677990228566567110574080000000000000

Offset: 2

Author

Jason Earls, May 25 2001

Keywords

• nonn

Links

• Harry J. Smith, Table of n, a(n) for n = 2..54

Crossrefs

Cf. A039716.

Programs

Mathematica

a[n_]:=Prime[n-1]!*Prime[n]!; Array[a,8,2] (* Stefano Spezia, Aug 02 2024 *)

PARI

{ n=1; f=2; forprime (p=3, prime(54), g=p!; write("b061025.txt", n++, " ", f*g); f=g ) } \\ Harry J. Smith, Jul 16 2009

Extensions

More terms from Harry J. Smith, Jul 16 2009

Definition offset corrected by Stefano Spezia, Aug 02 2024