A125342 Number of base 32 circular n-digit numbers with adjacent digits differing by 3 or less.

1, 32, 212, 1100, 6700, 41252, 260276, 1663260, 10741356, 69920372, 458065232, 3016606328, 19952674708, 132459700444, 882141536432, 5890902558440, 39433549800556, 264525710537012, 1777811473603544, 11968319215904376

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: A283336 A223023 A119286 * A126500 A160538 A200787

Adjacent sequences: A125339 A125340 A125341 * A125343 A125344 A125345

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved