220782

Appears in sequences

• Number of (n+2)X(4+2) 0..3 arrays with every consecutive three elements in every row, column, diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=8A253040
• Coefficient of x^n in the expansion of ( (1+x+x^3)^3 / (1+x)^2 )^n.at n=11A372373