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A031768
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Numbers n such that least term in period of continued fraction for sqrt(n) is 90.
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1
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2026, 8102, 18228, 32404, 50630, 72906, 99232, 129608, 164034, 202510, 245036, 291612, 342238, 396914, 455640, 518416, 585242, 656118, 731044, 810020, 893046, 980122, 1071248, 1166424, 1265650, 1368926, 1476252, 1587628, 1703054, 1822530
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Comment from Franklin T. Adams-Watters, Feb 21 2009: A156856 is almost certainly a proper sequence of this sequence.
In fact the first term not of the form A156856(n)=(45n)^2+n is a(93) = 17147972, with contfrac(sqrt(17147972)) = [4141; [91, 90, 91, 8282]]. [From M. F. Hasler (www.univ-ag.fr/~mhasler), Feb 21 2009]
The first term not of the form A156856(n)=(45n)^2+n is a(93) = 17147972, with contfrac(sqrt(17147972)) = [4141; [91, 90, 91, 8282]]. [From M. F. Hasler (www.univ-ag.fr/~mhasler), Feb 21 2009]
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CROSSREFS
| Cf. A156856.
Sequence in context: A126172 A183999 * A156856 A031633 A031543 A031723
Adjacent sequences: A031765 A031766 A031767 * A031769 A031770 A031771
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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