3325410

Appears in sequences

• Number of (n+2) X 9 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=8A202051
• Expansion of (1 - x + x^2 + sqrt(1 + 2*x + 3*x^2 - 2*x^3 + x^4)) / 2 in powers of x.at n=30A239466