The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A017377 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A017377

a(n) = 10*n + 9.
(history; published version)

#40 by Charles R Greathouse IV at Thu Sep 08 08:44:42 EDT 2022

PROG

(MAGMAMagma) [10*n+9: n in [0..60]]; // Vincenzo Librandi, May 29 2011

Discussion

Thu Sep 08

08:44

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

#39 by Bruno Berselli at Wed Dec 12 06:16:16 EST 2018

STATUS

editing

approved

#38 by Bruno Berselli at Wed Dec 12 06:16:12 EST 2018

COMMENTS

Numbers k such that k^k end ends with 9. - Bruno Berselli, Dec 11 2018

#37 by Bruno Berselli at Tue Dec 11 12:22:34 EST 2018

NAME

10na(n) = 10*n + 9.

COMMENTS

Numbers k such that k^k end with 9. - Bruno Berselli, Dec 11 2018

STATUS

approved

editing

#36 by N. J. A. Sloane at Tue Apr 18 07:03:14 EDT 2017

LINKS

INRIA Algorithms Project, <a href="http://algoecs.inria.fr/ecsservices/ecsstructure?searchType=1&service=Search&searchTermsnbr=979">Encyclopedia of Combinatorial Structures 979</a>

Discussion

Tue Apr 18

07:03

OEIS Server: https://oeis.org/edit/global/2632

#35 by Charles R Greathouse IV at Sun Feb 12 20:02:54 EST 2017

STATUS

editing

approved

#34 by Charles R Greathouse IV at Sun Feb 12 20:02:52 EST 2017

PROG

(PARI) a(n)=10*n+9 \\ Charles R Greathouse IV, Feb 12 2017

STATUS

approved

editing

#33 by R. J. Mathar at Fri Oct 16 18:21:04 EDT 2015

STATUS

editing

approved

#32 by R. J. Mathar at Fri Oct 16 18:20:54 EDT 2015

LINKS

<a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1).

FORMULA

G.f.: ( 9+x ) / (x-1)^2 . - R. J. Mathar, Oct 16 2015

STATUS

approved

editing

#31 by Joerg Arndt at Sun Dec 28 04:42:39 EST 2014

STATUS

reviewed

approved