Number of (n+1) X 3 binary arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.

A185762

Number of (n+1) X 3 binary arrays with no 2 X 2 subblock trace equal to any horizontal or vertical neighbor 2 X 2 subblock trace.

Terms

    a(0) =40a(1) =120a(2) =368a(3) =1128a(4) =3456a(5) =10592a(6) =32456a(7) =99464a(8) =304792a(9) =934032a(10) =2862248a(11) =8771232a(12) =26878752a(13) =82368392a(14) =252412136a(15) =773501240a(16) =2370342448a(17) =7263762024a(18) =22259317952a(19) =68212232544a(20) =209031902280a(21) =640564615496

External references