A147937 - OEIS

A147937

Number of permutations of floor(i*7/3), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.

%I #5 Apr 07 2021 19:18:44

%S 1,2,6,24,74,368,2214,10892,69096,539954,3553936,28970266,277928108,

%T 2211165332,22140514554,252424615916

%N Number of permutations of floor(i*7/3), 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