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A176840 Variant of A176546 with the sign of the second term switched. 0
1, -1, 1, -1, 1, -1, 5, -691, 7, -3617, 43867, -174611, 854513 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

Essentially the same as A000367. Also the nonzero entries of A027641.

LINKS

Table of n, a(n) for n=0..12.

FORMULA

a(n)=A176546(n), n>1.

CROSSREFS

Cf. A027641.

Sequence in context: A180315 A242193 A090947 * A000367 A176546 A092133

Adjacent sequences:  A176837 A176838 A176839 * A176841 A176842 A176843

KEYWORD

sign,frac,easy,less

AUTHOR

Paul Curtz, Apr 27 2010

STATUS

approved

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Last modified February 24 05:48 EST 2018. Contains 299597 sequences. (Running on oeis4.)