The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A125321

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Showing entries 1-10 | older changes

A125321

Number of base 11 circular n-digit numbers with adjacent digits differing by 3 or less.
(history; published version)

#11 by Michel Marcus at Sat Jun 03 06:28:14 EDT 2017

STATUS

reviewed

approved

#10 by Joerg Arndt at Sat Jun 03 06:13:18 EDT 2017

STATUS

proposed

reviewed

#9 by Colin Barker at Sat Jun 03 05:47:26 EDT 2017

STATUS

editing

proposed

#8 by Colin Barker at Sat Jun 03 05:47:08 EDT 2017

FORMULA

G.f.: (1 - 28*x^2 - 56*x^3 + 318*x^4 + 112*x^5 - 540*x^6 - 48*x^7 + 224*x^8) / ((1 - 4*x - 2*x^2 + 4*x^3)*(1 - 7*x + 2*x^2 + 18*x^3 - 2*x^4 - 8*x^5)) (conjectured). - Colin Barker, Jun 03 2017

STATUS

approved

editing

#7 by Russ Cox at Sat Mar 31 12:35:01 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net), _, Dec 28 2006

Discussion

Sat Mar 31

12:35

OEIS Server: https://oeis.org/edit/global/875

#6 by Charles R Greathouse IV at Mon Nov 15 22:58:10 EST 2010

STATUS

proposed

approved

#5 by Charles R Greathouse IV at Mon Nov 15 22:58:08 EST 2010

KEYWORD

nonn,base,new

STATUS

approved

proposed

#4 by N. J. A. Sloane at Sat Oct 02 03:00:00 EDT 2010

KEYWORD

nonn,new

nonn

AUTHOR

Ron R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006

#3 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

KEYWORD

nonn,new

nonn

AUTHOR

Ron Hardin (rhhrhhardin(AT)cadenceatt.comnet), Dec 28 2006

#2 by N. J. A. Sloane at Sat Nov 10 03:00:00 EST 2007

COMMENTS

[empiricalEmpirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1

KEYWORD

nonn,new

nonn