Number of n X 2 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

A282879

Number of n X 2 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

Terms

    a(0) =0a(1) =2a(2) =8a(3) =32a(4) =122a(5) =416a(6) =1414a(7) =4626a(8) =14930a(9) =47432a(10) =149032a(11) =463918a(12) =1432956a(13) =4397436a(14) =13419434a(15) =40754026a(16) =123245234a(17) =371322718a(18) =1115052844a(19) =3338521720a(20) =9969125698a(21) =29697147320a(22) =88271949298a(23) =261856896380a(24) =775373941754

External references