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A061174
Fifth column of Lucas bisection triangle (odd part).
2
15, 545, 7043, 57560, 365045, 1970905, 9520315, 42385132, 177293730, 705980760, 2701362950, 10001654350, 36020160943, 126701700755, 436709397085, 1478813477920, 4930328078835, 16212542696607
OFFSET
0,1
COMMENTS
Numerator of g.f. is row polynomial sum(A061187(4,m)*x^m,m=0..7).
FORMULA
a(n)=A060924(n+4, 4).
G.f.: (3-2*x)*(16*x^6-56*x^5+181*x^4-306*x^3+171*x^2+110*x+5)/(1-3*x+x^2)^5.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Apr 20 2001
STATUS
approved