Number of binary arrangements without adjacent 1's in n X n rhombic hexagonal grid torus.

A066866

Number of binary arrangements without adjacent 1's in n X n rhombic hexagonal grid torus.

Terms

    a(0) =1a(1) =5a(2) =22a(3) =201a(4) =4216a(5) =162314a(6) =12329633a(7) =1831137521a(8) =528106112383

External references