Half the number of (n+2)X9 binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6.
A187315
Half the number of (n+2)X9 binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6.
Terms
- a(0) =24602854a(1) =6264576384
External references
- oeis: A187315