1,2
By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.
Sequence in context: A177908 A127102 A038808 * A028990 A151579 A024098
Adjacent sequences: A068725 A068726 A068727 * A068729 A068730 A068731
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 26 2002