%I #14 Dec 01 2018 19:31:13
%S 24,90,368,1496,6056,24440,98408,395576,1588136,6370040,25532648,
%T 102288056
%N Number of permutations of 1..2*n+4 with no adjacent elements within n in value.
%K nonn,more
%O 0,1
%A _R. H. Hardin_, Aug 03 2010
%E a(0)=24 prepended by _Seiichi Manyama_, Dec 01 2018