Number of spinal-convex polyominoes

الملخص EN

In his paper we describe a restricted class of polyominoes called spinal-convex polyominoes.

Spinal convex polyominoes created by two columns such that column 1 (respectively, column2) with at most two set columns sequence of adjacent ominoes and column 2 (respectively, column 1) with at least one set column sequence of adjacent ominoes.

In addition, this study reveals new combinatorial method of enumerating spinal-convex polyominoes.