Number of (n+2)X(n+2) 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

A185468

Number of (n+2)X(n+2) 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Terms

    a(0) =1169a(1) =21834a(2) =308692a(3) =3959167a(4) =46410729a(5) =493061605a(6) =4845252741a(7) =45945546278a(8) =443977171724

External references