OFFSET
0,4
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..400
FORMULA
a(n) = denominator( Sum_{k=0..n} 2^k/k! ). - G. C. Greubel, Jan 18 2017
MATHEMATICA
Denominator[Table[Sum[2^k/k!, {k, 0, n}], {n, 0, 50}]] (* G. C. Greubel, Jan 18 2017 *)
PROG
(PARI) for(n=0, 25, print1(denominator(sum(k=0, n, 2^k/k!)), ", ")) \\ G. C. Greubel, Jan 18 2017
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
N. J. A. Sloane, Jan 15 2000
STATUS
approved