489053827

Appears in sequences

• a(0) = 2, a(1) = 5, a(n) = 4 * a(n-1) - a(n-2).at n=15A144721
• Values of x in the solutions to x^2 - 4xy + y^2 + 11 = 0, where 0 < x < y.at n=30A237250