1/12 the number of (n+2)X8 0..2 arrays with each 3X3 subblock containing three of each value.
A184383
1/12 the number of (n+2)X8 0..2 arrays with each 3X3 subblock containing three of each value.
Terms
- a(0) =212747a(1) =242370a(2) =280347a(3) =336236a(4) =503298a(5) =890982a(6) =2168744a(7) =8382192a(8) =39000438
External references
- oeis: A184383