A125449 Number of base 14 circular n-digit numbers with adjacent digits differing by 8 or less.

1, 14, 166, 1814, 21646, 260634, 3150976, 38131968, 461600902, 5588325698, 67656232726, 819100333142, 9916703328088, 120059853232840, 1453544637963500, 17597823650746284, 213053933013850118

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: A228422 A218089 A273587 * A159738 A062148 A200164

Adjacent sequences: A125446 A125447 A125448 * A125450 A125451 A125452

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved