A006280 revision #29
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A006280
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Partial quotients in continued fraction expansion of Cahen's constant.
(Formerly M3372)
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6
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0, 1, 1, 1, 4, 9, 196, 16641, 639988804, 177227652025317609, 72589906463585427805281295977816196, 2280022876287160141646375873338796324543839666085098409289740769448641
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OFFSET
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0,5
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COMMENTS
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Shifted squares of denominators of convergents to Cahen's constant: a(n) = A006279(n-2)^2 for n > 1. - Jonathan Sondow, Aug 20 2014
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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MATHEMATICA
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b[n_] := b[n] = If[n < 2, 1, b[n-2]^2*b[n-1] + b[n-2]];
a[n_] := If[n == 0, 0, b[n-2]^2];
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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reviewed
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