1847042domain: NAppears in sequencesa(n) = 2*prime(n)^4.at n=10A172191a(n) = 2*n^4.at n=31A244730a(n) = Sum_{d|n} max(d, n/d)^4.at n=30A297843Numbers n that can be written as both the sum of two nonzero fourth powers and the sum of three nonzero fourth powers.at n=8A336536a(n) = n^4*tau(n).at n=30A386013