2090918

Appears in sequences

• a(0) = 0, a(1) = 1, a(n) = a(n-2)*a(n-2) + 2 for n > 1.at n=10A065653
• a(n) = a(n-1)^2 + 2.at n=5A072191
• Coefficients of polynomials (in descending powers of x) P(n,x) := 2 + P(n-1,x)^2, where P(1,x) = x + 2.at n=35A158983
• a(n) = floor((n+1/n)^4).at n=37A197603
• Irregular triangular array, read by rows: row n shows the coefficients of the polynomial p(n,x) defined in Comments.at n=20A329431