A061182 - OEIS

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A061182

Third column (m=2) of triangle A060921 (bisection of Fibonacci triangle, odd part).

2

3, 22, 111, 474, 1836, 6666, 23109, 77378, 252177, 804228, 2519640, 7777860, 23709783, 71501422, 213619683, 633011454, 1862264196, 5443487406, 15820188729, 45739697306, 131624104677, 377157259848

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OFFSET

0,1

COMMENTS

Numerator polynomial is sum(A061177(2,m)*x^m,m=0..2).

LINKS

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

FORMULA

a(n)= A060921(n+2, 2).

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

CROSSREFS

A001906, 2*A001870.

Sequence in context: A221543 A309000 A352027 * A143552 A006283 A232017

Adjacent sequences: A061179 A061180 A061181 * A061183 A061184 A061185

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Apr 20 2001

STATUS

approved