cp's OEIS Frontend

A068748 Number of potential flows in n X n array with integer velocities in -1..1, i.e., number of n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.

%I A068748 #8 Jul 30 2017 22:24:04
%S A068748 1,19,1665,690437,1366395515,12961320464027,590771311004409091,
%T A068748 129585582154154757804255,136932044780329080616264070553,
%U A068748 697547669137459516115242710064880165
%N A068748 Number of potential flows in n X n array with integer velocities in -1..1, i.e., number of n X n arrays with adjacent elements differing by no more than 1, counting arrays differing by a constant only once.
%Y A068748 By size 3 X 3, ..., 6 X 6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738.
%K A068748 nonn
%O A068748 1,2
%A A068748 _R. H. Hardin_, Feb 27 2002