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A264609 A260685(4n). 1
-2, -6, 4, -54, 28, 132, 124, -4470, 444, 5964, 2044, 89028, 8188, 248172, 9784, -30229110, 131068, 7314348, 524284, 361466316, 174136, 354424812, 8388604, 54096506052, 16344060, 12926541804, 46427196, 1198466847468, 536870908, 216322653432 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

CROSSREFS

Cf. A260685.

Sequence in context: A322827 A322825 A215408 * A126262 A258324 A080499

Adjacent sequences:  A264606 A264607 A264608 * A264610 A264611 A264612

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Nov 24 2015

STATUS

approved

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Last modified November 17 06:06 EST 2019. Contains 329217 sequences. (Running on oeis4.)