14778068

Appears in sequences

• Number of (n+2) X (1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3 X 3 subblock summing to 3 4 5 or 6.at n=6A251830
• T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 3 4 5 or 6.at n=21A251836
• G.f. A(x) satisfies A(x) = 1 + x + x^3*A(x)^4.at n=21A366557