%I #5 Apr 07 2021 19:37:32
%S 1,2,6,24,96,444,2508,13216,81030,566512,4383340,43168552,356745786,
%T 3125719866,30567653042,349720370632
%N Number of permutations of floor(i*9/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 17 2008