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A165206 a(n)=-((4n-3)*F(2n-2)+(7n-4)*F(2n-1)). 1
1, -3, -25, -112, -416, -1411, -4537, -14085, -42653, -126794, -371554, -1076423, -3089555, -8799207, -24897121, -70052356, -196151492, -546916555, -1519249933, -4206274089, -11611243109, -31967026718, -87796880710 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Hankel transform of A165205.

FORMULA

G.f.: (1-9x+4x^2-x^3)/(1-3x+x^2)^2=(1-x)/(1-3x+x^2)-5x/(1-3x+x^2)^2.

CROSSREFS

Sequence in context: A166899 A201534 A059457 * A095664 A099868 A112495

Adjacent sequences:  A165203 A165204 A165205 * A165207 A165208 A165209

KEYWORD

easy,sign

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Sep 07 2009

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Last modified February 17 04:26 EST 2012. Contains 205978 sequences.