Number of (n+2) X 4 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order.
A204748
Number of (n+2) X 4 0..1 arrays with every 3 X 3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order.
Terms
- a(0) =61a(1) =46a(2) =31a(3) =28a(4) =38a(5) =49a(6) =70a(7) =106a(8) =159a(9) =248a(10) =394a(11) =625a(12) =1002a(13) =1614a(14) =2599a(15) =4196a(16) =6782a(17) =10961a(18) =17726a(19) =28674a(20) =46383a(21) =75040a(22) =121410a(23) =196433a(24) =317826a(25) =514246a(26) =832055a(27) =1346284a(28) =2178326a(29) =3524593
External references
- oeis: A204748