1/12 the number of (n+2)X7 0..2 arrays with each 3X3 subblock containing three of each value.
A184382
1/12 the number of (n+2)X7 0..2 arrays with each 3X3 subblock containing three of each value.
Terms
- a(0) =43295a(1) =55386a(2) =73139a(3) =104312a(4) =207470a(5) =503298a(6) =1633604a(7) =7390644a(8) =37119266a(9) =201919862a(10) =1162693358a(11) =6783440940a(12) =40025476760a(13) =238338172356
External references
- oeis: A184382