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A125320 Number of base 10 circular n-digit numbers with adjacent digits differing by 3 or less. 0
1, 10, 58, 286, 1618, 9330, 54994, 328058, 1973026, 11928418, 72360138, 439900746, 2677993234, 16317209282, 99477496666, 606677367546, 3700738695234, 22577766952946, 137756725752298, 840561549454570 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

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

LINKS

Table of n, a(n) for n=0..19.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))

CROSSREFS

Sequence in context: A189417 A060157 A055583 * A126730 A126478 A223470

Adjacent sequences:  A125317 A125318 A125319 * A125321 A125322 A125323

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified May 21 05:20 EDT 2013. Contains 225474 sequences.