Number of (n+1) X 2 binary arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.

A185761

Number of (n+1) X 2 binary arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.

Terms

    a(0) =16a(1) =40a(2) =104a(3) =264a(4) =680a(5) =1736a(6) =4456a(7) =11400a(8) =29224a(9) =74824a(10) =191720a(11) =491016a(12) =1257896a(13) =3221960a(14) =8253544a(15) =21141384a(16) =54155560a(17) =138721096a(18) =355343336a(19) =910227720a(20) =2331601064a(21) =5972511944a(22) =15298916200a(23) =39188963976a(24) =100384628776a(25) =257140484680

External references