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Search: id:A113494
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| A113494 |
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a(0) = 2, a(1) = 3; for n>1, a(n) = a(n-2)^2 + a(n-1)^2. |
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1
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| 2, 3, 13, 178, 31853, 1014645293, 1029505071621669458, 1059880692494738761409621021617069613, 1123347082323126985848870489739619316533660939418089557571160604297983533
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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Harper's Magazine, Feb 2006, Page 14.
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MATHEMATICA
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a[1] = 2; a[2] = 3; a[n_] := a[n - 2]^2 + a[n - 1]^2; Array[a, 9] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A000283.
Sequence in context: A072162 A113785 A118323 this_sequence A139520 A132535 A056806
Adjacent sequences: A113491 A113492 A113493 this_sequence A113495 A113496 A113497
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KEYWORD
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nonn,easy
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AUTHOR
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Michael Hogan (Michael(AT)michaelhogan.com), Jan 10 2006
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EXTENSIONS
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Corrected and extended by Robert G. Wilson v, Jan 11 2006
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