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A210989
Number of one-sided polyominoes with 2n-1 cells.
3
1, 2, 18, 196, 2500, 33896, 476270, 6849777, 100203194, 1485200848, 22245940545, 336093325058, 5114451441106, 78306011677182, 1205243866707468, 18635412907198670, 289296535756895985, 4506983054619138245, 70436637624668665265
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Polyomino
Wikipedia, Polyomino
CROSSREFS
Bisection of A000988.
Sequence in context: A157765 A156341 A262718 * A361877 A116072 A376104
KEYWORD
nonn
AUTHOR
Omar E. Pol, Sep 16 2012
STATUS
approved