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A061180 Fifth column (m=4) of triangle A060920 (bisection of Fibonacci triangle, even part). 1
1, 20, 190, 1295, 7285, 36122, 163730, 693835, 2790100, 10758050, 40075630, 145052300, 512347975, 1772132390, 6018885570, 20118711993, 66306068715, 215797999830, 694463680160, 2212291834405, 6982976069384 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Numerator polynomial of g.f. is sum(A061176(5,m)*x^m,m=0..5).

LINKS

Table of n, a(n) for n=0..20.

FORMULA

a(n)= A060920(n+4, 4).

G.f.: ((1-x^5)+5*(x-x^4)-15*(x^2-x^3))/(1-3*x+x^2)^5.

CROSSREFS

A061179.

Sequence in context: A014806 A022615 A171075 * A125383 A126541 A213218

Adjacent sequences:  A061177 A061178 A061179 * A061181 A061182 A061183

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Apr 20 2001

STATUS

approved

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Last modified September 22 00:42 EDT 2020. Contains 337276 sequences. (Running on oeis4.)