A125417 Number of base 29 circular n-digit numbers with adjacent digits differing by 6 or less.

1, 29, 335, 3137, 34299, 381809, 4352375, 50303933, 587692819, 6921768047, 82044792805, 977439559037, 11692570914903, 140339755157709, 1689036837196127, 20373841082411507, 246211831840225443

Offset

0,2

Comments

[Empirical] a(base,n)=a(base-1,n)+F(6) for base>=6.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]`-$[(i+1)mod N]`>6)+($[(i+1)mod N]`-$[i]`>6))

Crossrefs

Sequence in context: A107966 A057131 A160442 * A156640 A239743 A022689

Adjacent sequences: A125414 A125415 A125416 * A125418 A125419 A125420

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved