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A031704 Least term in period of continued fraction for sqrt(n) is 26. 2
170, 678, 1524, 2708, 4230, 6090, 8288, 10824, 13698, 16910, 20460, 24348, 28574, 33138, 38040, 43280, 48858, 54774, 61028, 67620, 74550, 81818, 89424, 97368, 105650, 114270, 123228, 132524, 133252, 142158, 152130, 162440, 173088, 184074 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

(13*m)^2 + m for m >=1 are terms in the sequence (see comment in A031742). The first term not of this form is a(29) = 133252. - Chai Wah Wu, Jun 19 2016

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 (first 60 terms from Vincenzo Librandi)

MATHEMATICA

Select[Range[190000], !IntegerQ[Sqrt[#]] &&Min[ContinuedFraction[Sqrt[#]][[2]]] == 26&] (* Vincenzo Librandi, Feb 11 2012 *)

CROSSREFS

Cf. A158000.

Sequence in context: A063943 A045089 A114078 * A173275 A281397 A206122

Adjacent sequences:  A031701 A031702 A031703 * A031705 A031706 A031707

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified September 21 15:30 EDT 2017. Contains 292309 sequences.