login
A125392
Number of base 29 circular n-digit numbers with adjacent digits differing by 5 or less.
0
1, 29, 289, 2309, 21589, 205179, 1997281, 19709719, 196617709, 1977552257, 20020401099, 203757946817, 2082804406009, 21367854312015, 219889215141535, 2268702606960279, 23459451945944285, 243045973961195761
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
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: A101380 A264298 A244873 * A126550 A146015 A163708
KEYWORD
nonn,base
AUTHOR
R. H. Hardin, Dec 28 2006
STATUS
approved