A125402 Number of base 14 circular n-digit numbers with adjacent digits differing by 6 or less.

1, 14, 140, 1232, 12264, 124544, 1282148, 13275164, 137827512, 1432774052, 14902936620, 155053649732, 1613412792924, 16789336384952, 174716066092918, 1818181935395762, 18921005733361000, 196902935774109020

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..17.

OEIS Wiki, Number of base k circular n-digit numbers with adjacent digits differing by d or less

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: A121034 A374513 A377200 * A016290 A003457 A263822

Adjacent sequences: A125399 A125400 A125401 * A125403 A125404 A125405

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved