Number of partitionings of n X n checkerboard into two edgewise-connected sets.

A068416

Number of partitionings of n X n checkerboard into two edgewise-connected sets.

Terms

    a(0) =0a(1) =6a(2) =53a(3) =627a(4) =16213a(5) =1123743a(6) =221984391a(7) =127561384993

External references