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A061179
Fourth column (m=3) of triangle A060920 (bisection of Fibonacci triangle, even part).
2
1, 14, 105, 594, 2860, 12402, 49963, 190570, 696787, 2463300, 8472280, 28481220, 93914325, 304597382, 973877245, 3075011478, 9602753412, 29695165110, 91026167999, 276833858530, 835933445799, 2507876305416
OFFSET
0,2
COMMENTS
Numerator polynomial of g.f. is sum(A061176(4,m)*x^m,m=0..4).
FORMULA
a(n)= A060920(n+3, 3).
G.f.: (1+2*x-5*x^2+2*x^3+x^4)/(1-3*x+x^2)^4.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Apr 20 2001
STATUS
approved