OFFSET
0,2
FORMULA
Lim_{n -> oo} r(n) = (4/3)^(3/2) = A118273.
EXAMPLE
r(n) = 1, 5/4, 11/8, 47/32, 191/128, 779/512, 1563/1024, 6287/4096, 50331/32768, 201639/131072, ...
PROG
(PARI) a(n)={ numerator(sum(j=0, n, j!/(2^j*(j\2)!)^2)) } \\ Andrew Howroyd, Sep 28 2019
(Julia)
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Peter Luschny, Sep 27 2019
STATUS
approved