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%I #6 Dec 01 2018 19:52:06
%S 1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,1664,395576,40495488,2779045440,
%T 147689145984
%N Number of permutations of 1..n with no adjacent elements within 7 in value.
%K nonn
%O 0,17
%A _R. H. Hardin_, Aug 03 2010
%E a(0)-a(14), a(21) from _Alois P. Heinz_, Dec 01 2018
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