A248759 Decimal expansion of sum_{n>=1} n!/(3n)!.

1, 6, 9, 4, 6, 1, 0, 2, 9, 0, 3, 2, 0, 7, 4, 1, 2, 8, 6, 4, 6, 9, 2, 6, 7, 0, 5, 2, 9, 8, 9, 9, 6, 3, 3, 3, 1, 6, 9, 7, 1, 2, 4, 2, 9, 9, 3, 7, 7, 4, 0, 8, 0, 0, 4, 2, 0, 5, 5, 4, 0, 2, 5, 1, 0, 0, 6, 3, 6, 1, 1, 8, 6, 6, 1, 1, 6, 0, 3, 2, 1, 4, 0, 2, 9, 9

Offset: 0

Author

Clark Kimberling, Oct 13 2014

Keywords

• nonn
• easy
• cons

Examples

			0.1694610290320741286469267052989963331697124299377408004205540251006361...
		

Crossrefs

Cf. A214869, A248696, A248760, A248761.

Programs

Maple

evalf(sum(n!/(3*n)!, n=1..infinity),120) # Vaclav Kotesovec, Oct 15 2014

Mathematica

u = N[Sum[n!/(3 n)!, {n, 1, 200}], 120]
RealDigits[u]  (* A248759 *)
N[HypergeometricPFQ[{1}, {4/3, 5/3}, 1/27]/6,120] (* Vaclav Kotesovec, Oct 15 2014 *)

PARI

suminf(n=1, n!/(3*n)!) \\ Michel Marcus, Oct 15 2014