89271domain: NAppears in sequencesSum of fourth powers: 0^4 + 1^4 + ... + n^4.at n=13A000538(1/30)*(p(p+1)(2p+1)(3p^2+3p-1)) where p is prime.at n=5A098997The larger companion to the deficient numbers in A212608.at n=26A212609