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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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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
J. L. Davison, J. O. Shallit, Continued Fractions for Some Alternating Series, Monatsh. Math., 111 (1991), 119-126.
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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.
Adjacent sequences: A006276 A006277 A006278 this_sequence A006280 A006281 A006282
Sequence in context: A064184 A154750 A041167 this_sequence A041521 A101003 A042071
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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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