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A093997 Number of partitions of n with an odd number of distinct Fibonacci parts. +0
2
0, 1, 1, 1, 0, 1, 1, 0, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 3, 1, 2, 2, 1, 2, 2, 2, 2, 0, 2, 2, 1, 3, 2, 3, 2, 1, 3, 2, 2, 3, 1, 2, 3, 2, 3, 1, 2, 2, 0, 3, 2, 2, 3, 2, 3, 3, 2, 4, 2, 2, 4, 1, 3, 3, 2, 4, 2, 3, 3, 1, 3, 3, 3, 4, 1, 3, 3, 1, 4, 2, 2, 2, 1, 3, 2, 2, 4, 2, 3, 4, 2, 4, 3, 3, 5, 1, 4, 4, 2 (list; graph; listen)
OFFSET

0,9

FORMULA

G.f.: (prod_{k=2..inf} (1 + x^{F_k}) - prod_{k=2..inf} (1 - x^{F_k}))/2

MATHEMATICA

Take[ CoefficientList[ Expand[ Product[1 + x^Fibonacci[k], {k, 2, 13}]/2 - Product[1 - x^Fibonacci[k], {k, 2, 13}]/2], x], 105] (from Robert G. Wilson v May 29 2004)

CROSSREFS

Cf. A000119.

Sequence in context: A122934 A072170 A056624 this_sequence A157196 A063014 A097295

Adjacent sequences: A093994 A093995 A093996 this_sequence A093998 A093999 A094000

KEYWORD

easy,nonn

AUTHOR

Naoki Sato (nsato7(AT)yahoo.ca), May 24 2004

EXTENSIONS

Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), May 29 2004

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


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