38092domain: NAppears in sequencesa(n) = number of solutions to the Diophantine equation x+y^2+z^3=n^4 with positive x,y,z.at n=24A121876Numbers k such that A353802(k) / sigma(sigma(k)) is an integer > 1, where A353802(n) = Product_{p^e||n} sigma(sigma(p^e)).at n=24A353807