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A055139 Column 0 of triangle A055138. 0
1, -1, 0, 1, -1, -1, 4, -1, -19, 31, 120, -483, -933, 8623, 6748, -189589, 41561, 5147391, -6328400, -170622599, 394612599, 6807529823, -23890335372, -322371010985, 1564733285829, 17884889743135, -114158790326872 (list; graph; refs; listen; history; internal format)
OFFSET

0,7

CROSSREFS

Sequence in context: A192722 A057968 A141233 * A128041 A144885 A144886

Adjacent sequences:  A055136 A055137 A055138 * A055140 A055141 A055142

KEYWORD

sign

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), May 09 2000

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.