A147915 - OEIS

A147915

Number of permutations of floor(i*9/5), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.

%I #5 Apr 07 2021 19:22:39

%S 1,2,6,24,96,444,2508,13216,74772,490758,3432594,29784866,218746780,

%T 1711675050,14763495624,145575514096

%N Number of permutations of floor(i*9/5), 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