17312754domain: NAppears in sequencesa(n) = 1^n + 2^n + 3^n + 4^n.at n=12A0015511 + 4^n + 9^n + 16^n.at n=5A091775Sum of first n 12th powers.at n=4A123094a(n) = Sum_{k=0..n} k^(3*n).at n=4A349901a(n) = Sum_{k=0..floor(n/3)} k^n.at n=12A352982