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A125377
Number of base 14 circular n-digit numbers with adjacent digits differing by 5 or less.
0
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
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
KEYWORD
nonn,base
AUTHOR
R. H. Hardin, Dec 28 2006
STATUS
approved