1330863361domain: NAppears in sequencesa(n) = (7*n + 2)^4.at n=27A017008a(n) = (8*n + 7)^4.at n=23A017152a(n) = (9*n + 2)^4.at n=21A017188a(n) = (10*n + 1)^4.at n=19A017284a(n) = (11*n + 4)^4.at n=17A017440a(n) = (12*n + 11)^4.at n=15A017656