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Revision History for A034115

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A034115

Fractional part of square root of a(n) starts with 9: first term of runs.
(history; published version)

#28 by Harvey P. Dale at Sat Aug 14 15:31:51 EDT 2021

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editing

approved

#27 by Harvey P. Dale at Sat Aug 14 15:31:47 EDT 2021

MATHEMATICA

Join[{35}, Select[Partition[Select[Range[3000], NumberDigit[Sqrt[#], -1] == 9&], 2, 1], (#[[2]]-#[[1]]!=1&)][[All, 2]]] (* _or *) LinearRecurrence[{2, -1, 0, 0, 1, -2, 1}, {35, 48, 63, 80, 99, 119, 142}, 50] (* _Harvey P. Dale_, Aug 14 2021 *)

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approved

editing

#26 by Harvey P. Dale at Sat Aug 14 15:30:50 EDT 2021

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editing

approved

#25 by Harvey P. Dale at Sat Aug 14 15:30:47 EDT 2021

MATHEMATICA

Join[{35}, Select[Partition[Select[Range[3000], NumberDigit[Sqrt[#], -1] == 9&], 2, 1], (#[[2]]-#[[1]]!=1&)][[All, 2]]] (* Harvey P. Dale, Aug 14 2021 *)

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approved

editing

#24 by Joerg Arndt at Thu Sep 03 09:50:03 EDT 2020

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editing

approved

#23 by Joerg Arndt at Thu Sep 03 09:50:00 EDT 2020

NAME

Decimal Fractional part of square root of a(n) starts with 9: first term of runs.

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approved

editing

#22 by Joerg Arndt at Tue Jul 21 07:12:05 EDT 2020

STATUS

proposed

approved

#21 by Jinyuan Wang at Tue Jul 21 06:06:01 EDT 2020

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editing

proposed

#20 by Jinyuan Wang at Tue Jul 21 06:05:37 EDT 2020

LINKS

<a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1,0,0,1,-2,1).

CROSSREFS

Cf. A027690, A034105, A090223.

Cf. A027690, A090223.

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approved

editing

#19 by Bruno Berselli at Tue Jul 21 06:02:07 EDT 2020

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proposed

approved