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A061183 One-fourth of fourth (m=3) column of triangle A060921 (bisection of Fibonacci triangle, odd part). +0
3
1, 10, 64, 331, 1505, 6272, 24540, 91527, 328768, 1145650, 3893630, 12958400, 42364427, 136389128, 433263360, 1360269093, 4226523495, 13011186624, 39722775806, 120366164765, 362255552384, 1083513943700 (list; graph; listen)
OFFSET

0,2

COMMENT

Numerator polynomial of g.f. is sum(A061177(3,m)*x^m,m=0..3)/4.

FORMULA

a(n)= A060921(n+3, 3)/4.

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

CROSSREFS

A061182.

Sequence in context: A138661 A036426 A055855 this_sequence A155618 A144041 A033863

Adjacent sequences: A061180 A061181 A061182 this_sequence A061184 A061185 A061186

KEYWORD

nonn,easy

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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