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Search: id:A094567
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| 1, 4, 30, 203, 1394, 9552, 65473, 448756, 3075822, 21081995, 144498146, 990405024, 6788337025, 46527954148, 318907342014, 2185823439947, 14981856737618
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OFFSET
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0,2
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FORMULA
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a(n)=F(4n+1)-a(n-1) for n>=1, with a(0)=1.
(1/3) [Fib(4n+3) - (-1)^n ]. - Ralf Stephan, Dec 04 2004
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EXAMPLE
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Obtain 4, 30, 203 from a(0)=1 and Fibonacci numbers 1,5,34,233:
4=5-1, 30=34-4, 203=233-30.
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CROSSREFS
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Cf. A000045, A094566.
Sequence in context: A057416 A089154 A113450 this_sequence A134093 A007905 A084976
Adjacent sequences: A094564 A094565 A094566 this_sequence A094568 A094569 A094570
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu), May 12 2004
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