OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..440
FORMULA
a(n) = numerator(s(n)), where s(0)=1/2, s(n) = 1/(n+2)*(n +1 + Sum_{i=0..n-2} s(n-i-2)*(i+1)). - Vladimir Kruchinin, Sep 30 2016
MATHEMATICA
Numerator[Table[LaguerreL[n, -1], {n, 0, 50}]] (* G. C. Greubel, May 06 2018 *)
PROG
(PARI) lista(nn) = {x = 'x + O('x^nn); v = exp(x/(1-x))/(1-x); for (n=0, nn-1, print1(numerator(polcoeff(v, n)), ", "); ); } \\ Michel Marcus, Nov 27 2015
(PARI) for(n=0, 30, print1(numerator(sum(k=0, n, binomial(n, k)*(1/k!))), ", ")) \\ G. C. Greubel, May 06 2018
(Maxima) s(n):=if n=0 then 1/2 else 1/(n+2)*(n +1 +sum(s(n-i-2)*(i+1), i, 0, n-2));
makelist(num(s(n)), n, 0, 20); /* Vladimir Kruchinin, Sep 30 2016 */
(Magma) [Numerator((&+[Binomial(n, k)*(1/Factorial(k)): k in [0..n]])): n in [0..30]]; // G. C. Greubel, May 06 2018
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
N. J. A. Sloane, Nov 14 2009
STATUS
approved