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A136303 Transform of 0 by the reciprocal transformation to T_{1,1} (see link). 3
1, 5, 17, 48, 123, 300, 714, 1679, 3925, 9149, 21296, 49537, 115192, 267824, 622653, 1447533, 3365149, 7823068, 18186475, 42278476, 98285586, 228486323, 531166317, 1234811937, 2870589548, 6673311137, 15513566304, 36064666240, 83840177305 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..29.

Richard Choulet, Curtz-like transformation.

Index entries for linear recurrences with constant coefficients, signature (5,-9,8,-4,1).

FORMULA

G.f.: f(z)=1+5*z+...=((1+z^2)/((1-z)^2*(1-3*z+2*z^2-z^3))).

a(n+5) = 5*a(n+4)-9*a(n+3)+8*a(n+2)-4*a(n+1)+a(n) (n>=0). [Richard Choulet, Apr 07 2009]

MATHEMATICA

LinearRecurrence[{5, -9, 8, -4, 1}, {1, 5, 17, 48, 123}, 40] (* Harvey P. Dale, Apr 01 2018 *)

CROSSREFS

Sequence in context: A215053 A213767 A320854 * A268783 A273384 A006457

Adjacent sequences:  A136300 A136301 A136302 * A136304 A136305 A136306

KEYWORD

nonn,easy

AUTHOR

Richard Choulet, Mar 22 2008

STATUS

approved

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Last modified October 14 14:45 EDT 2019. Contains 328019 sequences. (Running on oeis4.)