The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A042626 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A042626

Numerators of continued fraction convergents to sqrt(843).
(history; published version)

#17 by Charles R Greathouse IV at Thu Sep 08 08:44:55 EDT 2022

PROG

(MAGMAMagma) I:=[29, 842, 48865, 1417927]; [n le 4 select I[n] else 1684*Self(n-2)-Self(n-4): n in [1..30]]; // Vincenzo Librandi, Nov 30 2013

Discussion

Thu Sep 08

08:44

OEIS Server: https://oeis.org/edit/global/2944

#16 by Ray Chandler at Sat Mar 18 17:38:30 EDT 2017

STATUS

editing

approved

#15 by Ray Chandler at Sat Mar 18 17:38:28 EDT 2017

LINKS

<a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0, 1684, 0, -1).

STATUS

approved

editing

#14 by Charles R Greathouse IV at Sat Jun 13 00:49:46 EDT 2015

LINKS

<a href="/index/Rec">Index to sequences with entries for linear recurrences with constant coefficients</a>, signature (0,1684,0,-1).

Discussion

Sat Jun 13

00:49

OEIS Server: https://oeis.org/edit/global/2439

#13 by Charles R Greathouse IV at Fri Jun 12 15:24:30 EDT 2015

LINKS

<a href="/index/Rea#recLCCRec">Index to sequences with linear recurrences with constant coefficients</a>, signature (0,1684,0,-1).

Discussion

Fri Jun 12

15:24

OEIS Server: https://oeis.org/edit/global/2436

#12 by Ralf Stephan at Sat Nov 30 03:59:20 EST 2013

STATUS

reviewed

approved

#11 by Bruno Berselli at Sat Nov 30 03:27:33 EST 2013

STATUS

proposed

reviewed

#10 by Bruno Berselli at Sat Nov 30 03:27:27 EST 2013

STATUS

editing

proposed

#9 by Bruno Berselli at Sat Nov 30 03:27:17 EST 2013

MATHEMATICA

Numerator[Convergents[Sqrt[843], 30]] (* or *) CoefficientList[Series[(29 + 842 x + 29 x^2 - x^3)/(1 - 1684 x^2 + x^4), {x, 0, 30}], x] (* Vincenzo Librandi, Nov 30 2013 *)

PROG

(MAGMA) I:=[29, 842, 48865, 1417927]; [n le 4 select I[n] else 1684*Self(n-2)-Self(n-4): n in [1..30]]; // Vincenzo Librandi, Nov 30 2013

STATUS

proposed

editing

#8 by Vincenzo Librandi at Sat Nov 30 01:26:18 EST 2013

STATUS

editing

proposed