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Search: id:A006279
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| A006279 |
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Convergents to Cahen's constant: a(n+2) = a(n)^2*a(n+1) + a(n).
(Formerly M0914)
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+0
4
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| 1, 1, 2, 3, 14, 129, 25298, 420984147, 269425140741515486, 47749585090209528873482531562977121
(list; graph; listen)
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OFFSET
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0,3
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REFERENCES
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J. L. Davison, J. O. Shallit, Continued Fractions for Some Alternating Series, Monatsh. Math., 111 (1991), 119-126.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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MAPLE
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A006279 := proc(n) options remember; if n <= 1 then RETURN(1) else A006279(n-2)^2*A006279(n-1)+A006279(n-2); fi; end;
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CROSSREFS
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Cf. A006280, A006281.
Sequence in context: A064184 A154750 A041167 this_sequence A041521 A101003 A042071
Adjacent sequences: A006276 A006277 A006278 this_sequence A006280 A006281 A006282
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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