A061175 One half of sixth column of Lucas bisection triangle (odd part).

9, 471, 8268, 85962, 662773, 4215123, 23440212, 118073914, 551281476, 2423731704, 10148667670, 40812739230, 158644493079, 599051383561, 2206150654944, 7949311477362, 28098758599203, 97645872621753

Offset: 0

Author

Wolfdieter Lang, Apr 20 2001

Keywords

• nonn
• easy

Comments

Numerator of G.f. is one half of row polynomial sum(A061187(5,m)*x^m,m=0..8).

Crossrefs

Cf. A002548, 2*A061171, A061172, 4*A061173, A061174.

Formula

a(n)= A060924(n+5, 5)/2.

G.f.: (1+x)*(3-2*x)*(12*x^3-35*x^2+29*x+1)*(4*x^3-9*x^2+15*x+3)/(1-3*x+x^2)^6.