Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

A293095

Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

Terms

    a(0) =0a(1) =9a(2) =48a(3) =554a(4) =3334a(5) =30837a(6) =202363a(7) =1733660a(8) =12139768a(9) =99907487a(10) =729039938a(11) =5866737162a(12) =43944684689a(13) =349284676982

External references