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A060215 Period of continued fraction for sqrt(a(n)) has n successive 1's. +0
1
3, 7, 7, 13, 58, 58, 135, 461, 819, 2081, 13834, 13834, 35955, 244647, 244647, 639389 (list; graph; listen)
OFFSET

1,1

PROGRAM

(PARI) print("3, 7, "):n=3:for(k=1, 10^6, v=contfrac(sqrt(k)):s=0:for(l=1, length(v)-n, if(v[l]==1, s=s+1, s=0): if(s==n, print1(k", "):n=n+1:k=k-1:break)))

CROSSREFS

Sequence in context: A139795 A118259 A060845 this_sequence A059478 A081218 A130003

Adjacent sequences: A060212 A060213 A060214 this_sequence A060216 A060217 A060218

KEYWORD

nonn

AUTHOR

Jeff Burch (gburch(AT)erols.com), Mar 21 2001

EXTENSIONS

More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Mar 26 2003

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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