OFFSET
0
EXAMPLE
a(1) = -a(485) = a(969) = -1.
MAPLE
S:= series(1/(exp(x)+exp(1)/2), x, 147):
seq(signum(coeff(S, x, j)), j=0..146);
CROSSREFS
KEYWORD
sign
AUTHOR
Mikhail Kurkov, Sep 10 2018 [verification needed]
STATUS
approved