A125351 - OEIS

A125351

Number of base 14 circular n-digit numbers with adjacent digits differing by 4 or less.

1, 14, 106, 674, 4946, 37014, 283330, 2196782, 17189858, 135356102, 1070440026, 8490518798, 67481635442, 537075903014, 4278507764938, 34105515215934, 271984108754114, 2169645089403350, 17310883131943930, 138136179160503278

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OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.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]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))

CROSSREFS

Sequence in context: A076128 A206761 A190868 * A126509 A200056 A206754

Adjacent sequences: A125348 A125349 A125350 * A125352 A125353 A125354

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved