Number of (n+2)X6 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.
A203919
Number of (n+2)X6 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) =5000a(1) =21632a(2) =75272a(3) =262088a(4) =916658a(5) =3220722a(6) =11309768a(7) =39783200a(8) =139846088a(9) =491348552a(10) =1725311282a(11) =6060344418a(12) =21285209138a(13) =74766898208a(14) =262625483282a(15) =922568228082
External references
- oeis: A203919