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Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
0

%I #5 Apr 07 2021 19:39:35

%S 1,2,6,24,96,456,2134,11650,74546,530962,3437002,24793292,214741200,

%T 2028628716,17460401888,162168439452

%N Number of permutations of floor(i*7/4), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 17 2008