0,2
D. H. Riedelmeier, Counting polyominoes: yet another attack, Discrete Math., 36, 191-203, 1981.
Sequence in context: A192711 A192712 A192713 * A192714 A027098 A183305
Adjacent sequences: A014556 A014557 A014558 * A014560 A014561 A014562
dead