%I #7 Apr 04 2019 16:17:44

%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