90707

Appears in sequences

• a(n) = a(n-1) - 2*a(n-2) with a(0) = 2, a(1) = 1.at n=31A002249
• a(n) is the unique odd positive solution y of 2^n = 7x^2 + y^2.at n=30A077021
• a(n) = Sum_{d|n} (n*d+1)^n.at n=3A367510