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A125453 Number of base 18 circular n-digit numbers with adjacent digits differing by 8 or less. 0
1, 18, 234, 2682, 34746, 459138, 6145542, 82693062, 1115442522, 15062655582, 203502787774, 2750016143882, 37165774777998, 502308390521358, 6789007978120728, 91758451965134532, 1240188134759212874 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+F(8) for base>=8.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n

LINKS

Table of n, a(n) for n=0..16.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>8)+($[(i+1)mod N]`-$[i]`>8))

CROSSREFS

Sequence in context: A193982 A021094 A275963 * A016256 A017065 A016252

Adjacent sequences:  A125450 A125451 A125452 * A125454 A125455 A125456

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified May 21 09:30 EDT 2022. Contains 353908 sequences. (Running on oeis4.)