OFFSET
0,6
REFERENCES
H. W. Gould, A class of binomial sums and a series transform, Utilitas Math., 45 (1994), 71-83.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
H. W. Gould, A class of binomial sums and a series transform, Utilitas Math., 45 (1994), 71-83. (Annotated scanned copy)
MAPLE
MATHEMATICA
a[n_] := a[n] = -Sum[(n+k)!*a[k]/(2*k)!, {k, 0, n-1}]; a[0] = 1; Table[a[n], {n, 0, 22}] (* Jean-François Alcover, Jan 27 2014 *)
CROSSREFS
KEYWORD
sign,easy,nice
AUTHOR
STATUS
approved