The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A126538 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A126538

Number of base 17 n-digit numbers with adjacent digits differing by five or less.
(history; published version)

#11 by Bruno Berselli at Tue Jul 18 11:35:42 EDT 2017

STATUS

reviewed

approved

#10 by Michel Marcus at Tue Jul 18 08:25:35 EDT 2017

STATUS

proposed

reviewed

#9 by Colin Barker at Tue Jul 18 06:33:32 EDT 2017

STATUS

editing

proposed

#8 by Colin Barker at Tue Jul 18 06:33:16 EDT 2017

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5.

FORMULA

G.f.: (1+6*x-24*x^2-54*x^3+42*x^4+72*x^5-16*x^6-24*x^7) / (1-11*x+6*x^2+64*x^3-18*x^4-76*x^5+8*x^6+24*x^7) (conjectured). - Colin Barker, Jul 18 2017

STATUS

approved

editing

#7 by Russ Cox at Sat Mar 31 12:35:06 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 Thu Nov 18 00:37:41 EST 2010

STATUS

proposed

approved

#5 by Charles R Greathouse IV at Thu Nov 18 00:37:38 EST 2010

KEYWORD

nonn,base

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)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5

KEYWORD

nonn,new

nonn