A111179 a(n) = Sum_{k=1..n} prime(k)!, where prime(k) is k-th prime.

2, 8, 128, 5168, 39921968, 6266942768, 355693695038768, 122000794103870768, 25852138739679080510768, 8841762019591840694222696510768, 8231680416197514658419785576510768, 13763753099458025462513494240000687976510768

Offset: 1

Author

Leroy Quet, Oct 22 2005

Keywords

• easy
• nonn

Examples

			2, 3, 5 and 7 are the first 4 primes. So a(4) = 2! + 3! + 5! + 7! = 2 +6 +120 +5040 = 5168.
		

Crossrefs

Cf. A039716.

Programs

Mathematica

Table[ Sum[ Prime[i]!, {i, n}], {n, 12}] (* Robert G. Wilson v, Oct 28 2005 *)

PARI

a(n)=sum(k=1,n,prime(k)!) \\ Lambert Klasen (lambert.klasen(AT)gmx.net), Oct 28 2005

Extensions

More terms from Lambert Klasen (lambert.klasen(AT)gmx.net) and Robert G. Wilson v, Oct 28 2005