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A140289
First quadrisection of A140287.
1
0, 0, 1, -7, 32, -120, 401, -1247, 3712, -10800, 31201, -90487, 264992, -784680, 2345201, -7051727, 21263872, -64145760, 193310401, -581652967, 1747480352, -5243918040, 15725054801, -47140982207, 141319714432, -423717125520, 1270699466401, -3811500847447, 11434371886112, -34305580792200, 102927256193201, -308811498176687
OFFSET
0,4
FORMULA
a(n)=-7a(n-1)-17a(n-2)-15a(n-3).
G.f.: x^2/((3*x + 1)*(5*x^2 + 4*x + 1)). - Colin Barker, Jul 10 2012
MATHEMATICA
LinearRecurrence[{-7, -17, -15}, {0, 0, 1}, 40] (* Harvey P. Dale, Mar 16 2015 *)
CROSSREFS
Sequence in context: A164270 A182820 A001794 * A133107 A178851 A213163
KEYWORD
sign,easy
AUTHOR
Paul Curtz, May 24 2008
EXTENSIONS
More terms from Colin Barker, Jul 10 2012
STATUS
approved