A319117 Sign of the n-th Maclaurin coefficient of 1/(exp(x) + exp(1)/2).

1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, -1

Offset

0

Links

Table of n, a(n) for n=0..73.

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

Cf. A210245, A210247.

Sequence in context: A154990 A209615 A242179 * A063747 A210245 A210247

Adjacent sequences: A319114 A319115 A319116 * A319118 A319119 A319120

Keyword

sign

Author

Mikhail Kurkov, Sep 10 2018 [verification needed]

Status

approved