OFFSET
0,3
LINKS
R. S. Harris, Counting Nonomino Tilings and Other Things of that Ilk, G4G9 Gift Exchange book, 2010.
R. S. Harris, Counting Polyomino Tilings
Wikipedia, Hexomino
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Bob Harris (me13013(AT)gmail.com), Mar 13 2010
STATUS
approved