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 A125414 Number of base 26 circular n-digit numbers with adjacent digits differing by 6 or less. 0

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

%S 1,26,296,2756,29892,330356,3738086,42883958,497205916,5810305592,

%T 68313427046,807000192882,9568842826626,113794077582874,

%U 1356389840390468,16197239147470556,193695966077033740

%N Number of base 26 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 13 15:02 EDT 2024. Contains 371644 sequences. (Running on oeis4.)