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A125424 Number of base 12 circular n-digit numbers with adjacent digits differing by 7 or less. 0
1, 12, 124, 1188, 12356, 129492, 1361746, 14331126, 150856188, 1588078260, 16718137334, 175997231290, 1852781990558, 19504865161846, 205334357806520, 2161624764528348, 22756160755947020, 239561861905201388 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
[Empirical] a(base,n)=a(base-1,n)+F(7) for base>=7.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n
LINKS
PROG
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>7)+($[(i+1)mod N]`-$[i]`>7))
CROSSREFS
Sequence in context: A291065 A366634 A273586 * A163147 A120918 A262573
KEYWORD
nonn,base
AUTHOR
R. H. Hardin, Dec 28 2006
STATUS
approved

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Last modified May 26 18:12 EDT 2024. Contains 372840 sequences. (Running on oeis4.)