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A061170
Fourth column of Lucas bisection triangle (even part).
1
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
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).
Sequence in context: A306953 A302573 A251933 * A125114 A281649 A189413
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Apr 20 2001
STATUS
approved