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A023557 Convolution of A023531 and Fibonacci numbers. 0
0, 1, 1, 2, 4, 6, 10, 16, 27, 43, 70, 113, 183, 297, 480, 777, 1257, 2034, 3291, 5326, 8617, 13943, 22560, 36503, 59063, 95566, 154630, 250196, 404826, 655022, 1059848, 1714870, 2774718, 4489588, 7264307 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

FORMULA

a(n)= a(n-1)+a(n-2)+1 if n mod 4 = 0, else a(n)=a(n-1)+a(n-2), with offset 0 [From Gary Detlefs (gdetlefs(At)aol.com)

Dec 05 2010]

CROSSREFS

Sequence in context: A065795 A000801 A080105 * A173434 A052185 A136241

Adjacent sequences:  A023554 A023555 A023556 * A023558 A023559 A023560

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 13 10:09 EST 2012. Contains 205451 sequences.