A125377 Number of base 14 circular n-digit numbers with adjacent digits differing by 5 or less.

1, 14, 124, 944, 8224, 73164, 663592, 6079164, 56025792, 518098976, 4800482504, 44528550080, 413300021488, 3837488395352, 35638247594192, 331005480808464, 3074553653662208, 28559120705050336, 265287361541008864

Offset

0,2

Comments

[Empirical] a(base,n)=a(base-1,n)+F(5) for base>=5.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..18.

Prog

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>5)+($[(i+1)mod N]`-$[i]`>5))

Crossrefs

Sequence in context: A239544 A167567 A188411 * A147590 A167602 A212234

Adjacent sequences: A125374 A125375 A125376 * A125378 A125379 A125380

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved