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A216821
Number of standardized 4-connected side polyominoes of inner site-perimeter n.
0
0, 1, 1, 5, 13, 54, 182, 782, 3080, 13250
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
Sequence in context: A149541 A149542 A089794 * A039510 A149543 A149544
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 20 2012
STATUS
approved