A068749 - OEIS

A068749

Number of potential flows in n X n array with integer velocities in -2..2, i.e., number of n X n arrays with adjacent elements differing by no more than 2, counting arrays differing by a constant only once.

%I #8 Jul 30 2017 22:23:50

%S 1,85,87825,1133641543,184422574177355,379827509377146575439,

%T 9928923943603018785634645661

%N Number of potential flows in n X n array with integer velocities in -2..2, i.e., number of n X n arrays with adjacent elements differing by no more than 2, counting arrays differing by a constant only once.

%Y By size 3 X 3, ..., 6 X 6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738.

%K nonn

%O 1,2

%A _R. H. Hardin_, Feb 27 2002