OFFSET
1,1
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..1000
FORMULA
r = sum_{n >= 0} (9 n^2 + 14 n + 5) (2 n)!/(3 n + 2)!.
EXAMPLE
r = 3.0101448539910523219116461487677327...
MAPLE
evalf(sum(floor(2n/3)!/n!, n=0..infinity), 120); # Vaclav Kotesovec, Oct 17 2014
MATHEMATICA
x = N[Sum[Floor[2 n/3]!/n!, {n, 0, 200}], 120]
RealDigits[x][[1]] (* A248678 *)
CROSSREFS
KEYWORD
AUTHOR
Clark Kimberling, Oct 11 2014
STATUS
approved