OFFSET
0,2
MATHEMATICA
Sin[ Tan[ x ]/Cos[ x ] ] (* Odd Part *)
PROG
(Maxima)
a(n):=4*sum(((-1)^(m)*sum((binomial(m+k-1, 2*m)*sum((2*i-2*k+1)^(2*n+1)*binomial(2*k-1, i)*(-1)^(i-n+k), i, 0, k-1/2))/2^(2*k), k, m+1, n+1))/(2*m+1)!, m, 0, n); /* Vladimir Kruchinin, Jun 23 2011 */
CROSSREFS
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved