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A007704
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a(n+2) = (a(n) - 1)a(n+1) + 1.
(Formerly M0594)
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1
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2, 3, 4, 9, 28, 225, 6076, 1361025, 8268226876, 11253255215681025, 93044467205527772332546876, 1047053135870867396062743192203958743681025
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| 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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FORMULA
| a(n) = A006277(n)+1. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 27 2007
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MAPLE
| A007704 := proc(n) options remember; if n <= 2 then RETURN(n+1) else (A007704(n-2)-1)*A007704(n-1)+1; fi; end;
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CROSSREFS
| Sequence in context: A001144 A121253 A014118 * A059972 A086432 A186928
Adjacent sequences: A007701 A007702 A007703 * A007705 A007706 A007707
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jeffrey Shallit
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