Counting horizontally convex polyominoes.
Hickerson, Dean
Journal of Integer Sequences [electronic only], Tome 2 (1999), / Harvested from The Electronic Library of Mathematics
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Publié le : 1999-01-01
EUDML-ID : urn:eudml:doc:224706 
@article{01357398,
     title = {Counting horizontally convex polyominoes.},
     journal = {Journal of Integer Sequences [electronic only]},
     volume = {2},
     year = {1999},
     zbl = {0931.05021},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01357398}
}

Hickerson, Dean. Counting horizontally convex polyominoes.. Journal of Integer Sequences [electronic only], Tome 2 (1999) . http://gdmltest.u-ga.fr/item/01357398/