a(n) = Sum_{d|n} d^(d+n).A308594a(n) = Sum_{d|n} d^(d+n).Terms a(0) =1a(1) =17a(2) =730a(3) =65601a(4) =9765626a(5) =2176802276a(6) =678223072850External referencesoeis: A308594