A152344 - OEIS

%I #5 Apr 07 2021 20:10:16

%S 1,2,6,24,120,672,4188,28848,234528,2079828,20606690,211939474,

%T 2381039898,28964770548,377119012016,5313570528018

%N Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 4 adjacent terms unique.

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 02 2008