%I
%S 1,1,2,6,24,120,720,5040,40320,362880,3628800,32659200,267805440,
%T 2033498880,14563332000,100185340320,672903217200,4472291398032,
%U 29721557854116,199059839989844
%N Number of permutations of 1..n with all adjacent differences <= 9 in absolute value.
%C a(n) = n! for n <= 10.
%K nonn
%O 0,3
%A _R. H. Hardin_, May 06 2010
