281950621875domain: NAppears in sequencesa(n) = (9*n + 6)^5.at n=21A017237a(n) = (10*n + 5)^5.at n=19A017333a(n) = (11*n + 8)^5.at n=17A017489a(n) = (12*n + 3)^5.at n=16A017561