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A087123 Fib(n+1)-(-1)^nFib(n). 2
1, 2, 1, 5, 2, 13, 5, 34, 13, 89, 34, 233, 89, 610, 233, 1597, 610, 4181, 1597, 10946, 4181, 28657, 10946, 75025, 28657, 196418, 75025, 514229, 196418, 1346269, 514229, 3524578, 1346269, 9227465, 3524578, 24157817, 9227465, 63245986, 24157817 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Binomial transform is Fib(n)+Fib(2n+1)=A087124(n).

FORMULA

a(2n)=Fib(2n-1); a(2n+1)=Fib(2n+3).

CROSSREFS

Cf. A000045.

Sequence in context: A113175 A109191 * A097131 A192263 A109738 A143891

Adjacent sequences:  A087120 A087121 A087122 * A087124 A087125 A087126

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Aug 15 2003

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Last modified February 16 16:25 EST 2012. Contains 205938 sequences.