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Search: id:A103326
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A103326 a(n) = Fibonacci(5n)/Fibonacci(n). +0
1
5, 55, 305, 2255, 15005, 104005, 709805, 4873055, 33379505, 228841255, 1568358005, 10750060805, 73681030805, 505019869255, 3461450947505, 23725155368255, 162614587921805, 1114577087604805, 7639424691459005 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = L(4n) + (-1)^n*L(2n) + 1, where L(n) = A000032, the Lucas numbers.

a(n) = 1 + L(n)*L(3n). - Neven Juric, Jan 05 2009

CROSSREFS

Fourth row of array A028412.

Sequence in context: A057722 A078216 A014700 this_sequence A060558 A014852 A144893

Adjacent sequences: A103323 A103324 A103325 this_sequence A103327 A103328 A103329

KEYWORD

nonn

AUTHOR

Ralf Stephan, Feb 03 2005

page 1

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


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