1/12 the number of (n+2)X10 0..2 arrays with each 3X3 subblock containing three of each value.

A184385

1/12 the number of (n+2)X10 0..2 arrays with each 3X3 subblock containing three of each value.

Terms

    a(0) =6045233a(1) =6248040a(2) =6472317a(3) =6736118a(4) =7390644a(5) =8382192

External references