A061179 Fourth column (m=3) of triangle A060920 (bisection of Fibonacci triangle, even part).

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).

Links

Table of n, a(n) for n=0..21.

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

A061178.

Sequence in context: A290895 A341226 A022579 * A285752 A076128 A206761

Adjacent sequences: A061176 A061177 A061178 * A061180 A061181 A061182

Keyword

nonn,easy

Author

Wolfdieter Lang, Apr 20 2001

Status

approved