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%I #5 Apr 07 2021 19:21:27
%S 1,2,6,16,74,304,1720,11448,73544,556452,4351440,39758684,380173176,
%T 3837917536,45346283462,532159158036
%N Number of permutations of floor(i*9/7), i=0..n-1, with all sums of two adjacent terms unique.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 17 2008