A248680 Decimal expansion of r = sum{[n/3]!/[n/2]!, n = 0..infinity} and [ ] = floor.

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

Offset

1,1

Links

Clark Kimberling, Table of n, a(n) for n = 1..1000

Example

r = 6.207248052675586205425008556077037816805318220...

Mathematica

x = N[Sum[Floor[n/3]!/Floor[n/2]!, {n, 0, 400}], 120]
RealDigits[x][[1]]  (* A248680 *)

Prog

(PARI) suminf(n=0, (n\3)!/(n\2)!) \\ Michel Marcus, Oct 17 2014

Crossrefs

Cf. A248679, A248681.

Sequence in context: A087199 A153735 A295188 * A021621 A197844 A326825

Adjacent sequences: A248677 A248678 A248679 * A248681 A248682 A248683

Keyword

nonn,easy,cons

Author

Clark Kimberling, Oct 11 2014

Status

approved