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 A126409 Number of base 22 n-digit numbers with adjacent digits differing by two or less. 3

%I

%S 1,22,104,500,2418,11736,57098,278274,1357980,6633780,32433110,

%T 158676010,776746680,3804116478,18638153276,91348350296,447842953212,

%U 2196139279248,10771787471680,52844083573174,259283266049208

%N Number of base 22 n-digit numbers with adjacent digits differing by two or less.

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

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

%Y Cf. Base 22 differing by one or less A126376.

%K nonn,base

%O 0,2

%A _R. H. Hardin_, Dec 28 2006

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Last modified August 10 14:50 EDT 2020. Contains 336381 sequences. (Running on oeis4.)