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A144897 Expansion of x/(1-4*x+6*x^2-5*x^3+4*x^4-3*x^5). 1
0, 1, 4, 10, 21, 40, 71, 121, 204, 348, 609, 1097, 2021, 3767, 7035, 13082, 24160, 44318, 80883, 147201, 267702, 487225, 888115, 1621465, 2964090, 5422351, 9921404, 18150445, 33193146, 60679800, 110893986, 202625306, 370215059, 676438568, 1236053904 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

FORMULA

G.f.: x/(1-4*x+6*x^2-5*x^3+4*x^4-3*x^5).

MAPLE

a:= n-> (Matrix(5, (i, j)-> if i=j-1 then 1 elif j=1 then [4, -6, 5, -4, 3, -1][i] else 0 fi)^n)[1, 2]: seq(a(n), n=0..40);

MATHEMATICA

CoefficientList[Series[x / (1 - 4 x + 6 x^2 - 5 x^3 + 4 x^4 - 3 x^5), {x, 0, 50}], x] (* Vincenzo Librandi, Jun 06 2013 *)

CROSSREFS

Sequence in context: A301174 A220907 A226405 * A001891 A266355 A265053

Adjacent sequences:  A144894 A144895 A144896 * A144898 A144899 A144900

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Sep 24 2008

EXTENSIONS

Definition corrected at the suggestion of Vincenzo Librandi by Alois P. Heinz, Jun 06 2013

STATUS

approved

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Last modified May 21 19:10 EDT 2019. Contains 323444 sequences. (Running on oeis4.)