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A110688 Expansion of -(2*x+1)*(6*x^2+4*x+1)/((3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1)). 2
-1, 1, -4, 19, -73, 262, -931, 3319, -11884, 42679, -153505, 552430, -1988311, 7156123, -25754188, 92683315, -333539317, 1200299014, -4319477491, 15544370887, -55939087228, 201306503071, -724436520553, 2607011250526, -9381785144287 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..24.

Index entries for linear recurrences with constant coefficients, signature (-7,-17,-20,-12,-6).

MAPLE

seriestolist(series(-(2*x+1)*(6*x^2+4*x+1)/((3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1)), x=0, 25)); -or- Floretion Algebra Multiplication Program, FAMP Code: tessum(infty)-4jbaseforsumseq[ + 'i - .25'j + .25'k - .25j' + .25k' - .5'ii' - .25'ij' - .25'ik' - .25'ji' - .25'ki' - .5e], Sumtype is set to: default; Fortype is set to: 1A.

PROG

(PARI) Vec(-(2*x+1)*(6*x^2+4*x+1)/((3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1))+O(x^99)) \\ Charles R Greathouse IV, Sep 26 2012

CROSSREFS

Cf. A110687, A110689, A110679.

Sequence in context: A085348 A027232 A256714 * A218920 A009450 A096978

Adjacent sequences:  A110685 A110686 A110687 * A110689 A110690 A110691

KEYWORD

sign,easy

AUTHOR

Creighton Dement, Aug 02 2005

STATUS

approved

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Last modified August 20 17:20 EDT 2017. Contains 290837 sequences.