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Search: id:A141522
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| A141522 |
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a(n)=a(n-1)*a(n-2)+a(n-1)*a(n-3). |
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+0
1
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| 0, 1, 1, 1, 2, 4, 12, 72, 1152, 96768, 118444032, 11598039613440, 1374840894208868352000, 15945621994910596019667697926144000, 21922693387137438627357958684974264478793362424463360000
(list; graph; listen)
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OFFSET
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1,5
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REFERENCES
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Martin Gardner, Mathematical Circus,Randon House, New York, 1981,p 165
http://math.fullerton.edu/mathews/software/Matlab2004.zip
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PROGRAM
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MatLab program:
function y=fib(n)
%Generates running geometric numbers( second kind)
fz(1)=0; fz(2)=1; fz(3)=1;
for k=4:n
fz(k)=fz(k-1)*(fz(k-2)+fz(k-3));
end
y=fz(n);
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CROSSREFS
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Sequence in context: A078919 A085864 A060935 this_sequence A114903 A038054 A003180
Adjacent sequences: A141519 A141520 A141521 this_sequence A141523 A141524 A141525
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KEYWORD
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nonn
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AUTHOR
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Matt Wynne (matwyn(AT)verizon.net), Aug 11 2008
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