OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
MATHEMATICA
Numerator[EulerE[Range[0, 20], 4/21]] (* Vincenzo Librandi, May 08 2012 *)
CROSSREFS
KEYWORD
sign,frac
AUTHOR
N. J. A. Sloane, Nov 07 2009
STATUS
approved