Half the number of n X 3 binary arrays with no 3 X 3 submatrix formed with any three rows and columns equal to J-I.
A213413
Half the number of n X 3 binary arrays with no 3 X 3 submatrix formed with any three rows and columns equal to J-I.
Terms
- a(0) =4a(1) =32a(2) =253a(3) =1970a(4) =15109a(5) =114302a(6) =854473a(7) =6323090a(8) =46390429a(9) =337896422a(10) =2446208593a(11) =17618827610a(12) =126352826149a(13) =902840120942
External references
- oeis: A213413