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A125416 Number of base 28 circular n-digit numbers with adjacent digits differing by 6 or less. 0

%I #8 Mar 31 2012 12:35:02

%S 1,28,322,3010,32830,364658,4147612,47830608,557530518,6551280562,

%T 77467665302,920625665702,10984613101924,131489273810104,

%U 1578096648395736,18980188700616500,228674496511259030

%N Number of base 28 circular n-digit numbers with adjacent digits differing by 6 or less.

%C [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

%o (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))

%K nonn,base

%O 0,2

%A _R. H. Hardin_, Dec 28 2006

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Last modified April 12 19:05 EDT 2024. Contains 371636 sequences. (Running on oeis4.)