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A124719 Number of base 26 circular n-digit numbers with adjacent digits differing by 1 or less. 0
1, 26, 76, 176, 472, 1256, 3442, 9518, 26608, 74912, 212206, 604058, 1726582, 4952246, 14246644, 41090936, 118785568, 344073056, 998415598, 2901784298, 8445850762, 24614293082, 71820129424, 209785569908, 613390314046 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+A002426(n+1) for base>=1.int(n/2)+1

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>1)+($[(i+1)mod N]`-$[i]`>1))

CROSSREFS

Sequence in context: A044164 A044545 A139698 * A126380 A083578 A173307

Adjacent sequences:  A124716 A124717 A124718 * A124720 A124721 A124722

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 15 21:16 EST 2012. Contains 205856 sequences.