48455521

Appears in sequences

• a(n) = (n mod 2) if n <= 3, otherwise a(n) = (n^2-5n+7)*(n-2)*a(n-1)/(n-3) + (n^2-5n+7)*a(n-2) - (n-2)*a(n-3)/(n-3).at n=9A144656
• a(n) = A322248(n)^2, the square of the central coefficient in (1 + 5*x + 16*x^2)^n.at n=4A322249