1,2
By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.
Sequence in context: A189648 A100414 A189310 * A172800 A013768 A203673
Adjacent sequences: A068732 A068733 A068734 * A068736 A068737 A068738
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 26 2002