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A007704 a(n+2) = (a(n) - 1)a(n+1) + 1.
(Formerly M0594)
1
2, 3, 4, 9, 28, 225, 6076, 1361025, 8268226876, 11253255215681025, 93044467205527772332546876, 1047053135870867396062743192203958743681025 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=1..12.

J. L. Davison, Jeffrey Shallit, Continued Fractions for Some Alternating Series, Monatsh. Math., 111 (1991), 119-126.

FORMULA

a(n) = A006277(n) + 1. - R. J. Mathar, Apr 27 2007

MAPLE

A007704 := proc(n) options remember; if n <= 2 then RETURN(n+1) else (A007704(n-2)-1)*A007704(n-1)+1; fi; end;

CROSSREFS

Sequence in context: A001144 A121253 A014118 * A059972 A245930 A086432

Adjacent sequences:  A007701 A007702 A007703 * A007705 A007706 A007707

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jeffrey Shallit

STATUS

approved

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Last modified January 18 16:40 EST 2019. Contains 319271 sequences. (Running on oeis4.)