A152317 - OEIS

A152317

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

%I #5 Apr 07 2021 20:01:54

%S 1,2,6,24,104,572,3688,27200,208108,1782304,17035000,176048408,

%T 1966114726,23376757520,302105991330,4109445417380

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Dec 02 2008