723394816domain: NAppears in sequencesa(n) = (8*n + 4)^4.at n=20A017116a(n) = (9*n + 2)^4.at n=18A017188a(n) = (10*n + 4)^4.at n=16A017320a(n) = (11*n + 10)^4.at n=14A017512a(n) = (12*n + 8)^4.at n=13A017620