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A121256
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a(n-1)*a(n-3)-1, starting with a(0)=a(1)=a(2)=2.
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1
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2, 2, 2, 3, 5, 9, 26, 129, 1160, 30159, 3890510, 4512991599, 136107313634240, 529526864767147062399, 2389750292138943783804215786000, 325262492519671886357848434144628838112639999
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Analogue of A055937 a(n) = a(n-1)*a(n-2)-1. What is the equivalent continued fraction and asymptotic representation, by analogy to A007660 a(n)=a(n-1)*a(n-2)+1?
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..26
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PROG
| (MAGMA) I:=[2, 2, 2]; [n le 3 select I[n] else Self(n-1)*Self(n-3)-1: n in [1..18]]; // Vincenzo Librandi, Nov 14 2011
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CROSSREFS
| Cf. A007660, A055937.
Sequence in context: A122789 A014208 A059690 * A022867 A070610 A156820
Adjacent sequences: A121253 A121254 A121255 * A121257 A121258 A121259
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KEYWORD
| easy,nonn
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Aug 22 2006
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EXTENSIONS
| Corrected and extended by Vincenzo Librandi, Nov 14 2011
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