Enumeration Class of Polyominoes Defined by Two Column
Eman F. Mohommed, Haslinda Ibrahim, Nazihah Ahmad · IOSR Journal of Mathematics · 2017
Abacus diagram is a graphical representation for any partition µ of a positive integer t.This study presents the bead positions as a unite square in the graph and de ne a special type of e-abacus called nested chain abacus 𝔑 which is represented by the connected partition.Furthermore, we redefined the polyominoes as a special type of e-abacus diagram.Also, this study reveals new method of enumerating polyominoes special design when e=2.