8589935681domain: NAppears in sequencesa(n) = 2^n + n^2.at n=33A001580Primes in the sequence n^2 + 2^n (A001580).at n=5A061119Leyland primes: 3, together with primes of form x^y + y^x, for x > y > 1.at n=5A094133Smallest factor of 2^(2n+1)+(2n+1)^2.at n=16A109216Least prime of the form x^y+y^x with x = A162488(n) > y > 1.at n=6A162490