17994960

Appears in sequences

• 1/12 the number of (n+2)X3 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.at n=7A184499
• T(n,k)=1/12 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing one of one value, three of another, and five of the last.at n=28A184505