A179907 Numerators in the approximation of sqrt(2) satisfying the recurrence: a(n)= [a(n-1)*a(n-2)+2]/[a(n-1)+a(n-2)] with a(1)=a(2)=1

1, 1, 3, 7, 41, 577, 47321, 54608393, 5168247530883, 564459384575477049359

Offset

1,3

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A179823

Sequence in context: A018971 A006383 A181148 * A080581 A086397 A229941

Adjacent sequences: A179904 A179905 A179906 * A179908 A179909 A179910

Keyword

frac,nonn

Author

Mark Dols, Aug 01 2010

Status

approved