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A126546 Number of base 25 n-digit numbers with adjacent digits differing by five or less. 0

%I

%S 1,25,245,2475,25255,259127,2667039,27499769,283843569,2931488329,

%T 30286288971,312960372023,3234309867213,33427353913483,

%U 345492390255623,3570953641573985,36909251330677927,381495392831876277

%N Number of base 25 n-digit numbers with adjacent digits differing by five or less.

%C [Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5

%o (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))

%Y Cf. Base 25 differing by four or less A126520, three or less A126493, two or less A126412, one or less A126379.

%K nonn,base

%O 0,2

%A _R. H. Hardin_, Dec 28 2006

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Last modified August 8 16:16 EDT 2022. Contains 356015 sequences. (Running on oeis4.)