A147943 - OEIS

A147943

Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.

%I #5 Apr 07 2021 19:19:26

%S 1,2,6,24,74,312,1620,7876,41114,262142,1532832,9946476,74352024,

%T 512825612,3896130434,33601759994

%N Number of permutations of floor(i*4/3), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 17 2008