%I #5 Apr 07 2021 19:25:28
%S 1,2,6,16,54,232,1132,6024,45310,336372,2763524,23390652,212922998,
%T 2023344980,20591028914,219965702000
%N Number of permutations of floor(i*9/8), i=0..n-1, with all sums of two adjacent terms unique.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 17 2008