a(n) = 729000*n + 180.

Terms

a(0) =729180a(1) =1458180a(2) =2187180a(3) =2916180a(4) =3645180a(5) =4374180a(6) =5103180a(7) =5832180a(8) =6561180a(9) =7290180a(10) =8019180a(11) =8748180a(12) =9477180a(13) =10206180a(14) =10935180a(15) =11664180a(16) =12393180a(17) =13122180a(18) =13851180a(19) =14580180a(20) =15309180a(21) =16038180a(22) =16767180a(23) =17496180