1678940

Appears in sequences

• Expansion of 1/((1-x)*(1-3*x)*(1-7*x)).at n=7A016212
• Triangle read by rows, T(n,k) = (2^k-1) * T(n-1,k) + T(n-1,k-1).at n=47A139382
• T(n,k)=Number of 0..3 colorings of an nx(k+1) array circular in the k+1 direction with new values 0..3 introduced in row major order.at n=37A214112
• Number of 0..3 colorings of a 2X(n+1) array circular in the n+1 direction with new values 0..3 introduced in row major order.at n=7A214113