The On-Line Encyclopedia of Integer Sequences (OEIS)

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A061179

Fourth column (m=3) of triangle A060920 (bisection of Fibonacci triangle, even part).
(history; published version)

#3 by Russ Cox at Sat Mar 31 13:20:05 EDT 2012

AUTHOR

_Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), _, Apr 20 2001

Discussion

Sat Mar 31

13:20

OEIS Server: https://oeis.org/edit/global/878

#2 by N. J. A. Sloane at Fri Feb 24 03:00:00 EST 2006

FORMULA

a(n)= A060920(n+3, 3).

KEYWORD

nonn,easy,new

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

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

DATA

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

A061178.

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Apr 20 2001

STATUS

approved