1,2
By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738.
Sequence in context: A097323 A166943 A125533 * A135095 A115739 A142202
Adjacent sequences: A068724 A068725 A068726 * A068728 A068729 A068730
nonn
R. H. Hardin (rhhardin(AT)att.net), Feb 26 2002