Number of (n+2)X4 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..1 introduced in row major order.
A205258
Number of (n+2)X4 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..1 introduced in row major order.
Terms
- a(0) =1814a(1) =26185a(2) =379283a(3) =5487807a(4) =79391891a(5) =1148637735a(6) =16618559061a(7) =240437007466
External references
- oeis: A205258