A359667 a(n) is the number of minimally prolific free polyominoes, i.e., that can generate the least possible number of children by adding a square.
1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 3, 1, 1, 5, 1, 1, 2, 2
Offset: 1
Examples
a(8) = 5 because each of the following octominoes will generate the minimum number of children given by A255890(8) = 3: OO OOO OO O O OO O O OOOO OOO OOO OO OOO OO OOO OOO OO O O
Links
- John Mason, Illustrations