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%I #10 Jan 19 2016 18:22:16
%S 1,1,252,756756,457507512,184619047020,97087382008034,
%T 49254897805981056,22802419346927105088
%N Number of permutations of 5 copies of 1..n with all adjacent differences <= 2 in absolute value.
%C a(n) = (5n)!/120^n for n<=3.
%Y Cf. A014609.
%K nonn,more
%O 0,3
%A _R. H. Hardin_, May 06 2010
%E a(0), a(8) from _Alois P. Heinz_, Jan 19 2016