A038797 T(n+4,n), array T as in A038792.

1, 6, 23, 73, 211, 581, 1560, 4135, 10890, 28590, 74946, 196326, 514123, 1346148, 3524441, 9227311, 24157645, 63245795, 165579930, 433494205, 1134902916, 2971214796, 7778741748, 20365010748, 53316290821, 139583862066, 365435295755, 956722025605, 2504730781495

Offset

0,2

Links

Stefano Spezia, Table of n, a(n) for n = 0..2300

Index entries for linear recurrences with constant coefficients, signature (6,-13,13,-6,1).

Formula

G.f.: 1/((1 - 3*x + x^2)*(1 - x)^3). [Maksym Voznyy (voznyy(AT)mail.ru), Aug 14 2009]

Mathematica

CoefficientList[Series[1/((1-3*x+x^2)*(1-x)^3), {x, 0, 28}], x] (* Stefano Spezia, Apr 24 2023 *)

Crossrefs

Apparently the same as A038737.

Cf. A038792.

Sequence in context: A273386 A045618 A038737 * A136530 A259033 A054459

Adjacent sequences: A038794 A038795 A038796 * A038798 A038799 A038800

Keyword

nonn,easy

Author

Clark Kimberling, May 02 2000

Extensions

Definition corrected by R. J. Mathar, Sep 16 2009

Status

approved