Number of (n+2)X4 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
A203917
Number of (n+2)X4 0..1 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..1 introduced in row major order.
Terms
- a(0) =392a(1) =1682a(2) =6050a(3) =21632a(4) =77618a(5) =279752a(6) =1008200a(7) =3628818a(8) =13056050a(9) =46986818a(10) =169132832a(11) =608795618a(12) =2191220000a(13) =7886675232a(14) =28386296450a(15) =102170984882a(16) =367744025618
External references
- oeis: A203917