A061170 Fourth column of Lucas bisection triangle (even part).

1, 70, 905, 6666, 37580, 181074, 786715, 3176210, 12139859, 44471340, 157483176, 542468100, 1826073525, 6028577566, 19573942365, 62643859374, 197971385860, 618724626390, 1914707164559, 5873145245930

Offset

0,2

Comments

Numerator of g.f. is row polynomial Sum_{m=0..6} A061186(4,m)*x^m.

Links

Matthew House, Table of n, a(n) for n = 0..2354

Index entries for linear recurrences with constant coefficients, signature (12,-58,144,-195,144,-58,12,-1).

Formula

a(n) = A060923(n+3, 3).

G.f.: (1+58*x+123*x^2-278*x^3+193*x^4-72*x^5+16*x^6)/(1-3*x+x^2)^4.

Crossrefs

Cf. A002878(n) = A060923(n, 0).

Cf. A060934, A061169.

Sequence in context: A306953 A302573 A251933 * A125114 A281649 A189413

Adjacent sequences: A061167 A061168 A061169 * A061171 A061172 A061173

Keyword

nonn,easy

Author

Wolfdieter Lang, Apr 20 2001

Status

approved