OFFSET
2,4
LINKS
J. Fortier, A. Goupil, J. Lortie and J. Tremblay, Exhaustive generation of gominoes, Theoretical Computer Science, 502 (2013), 76-87.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 20 2012
STATUS
approved