a(n) = 1728000*n + 240.

Terms

a(0) =1728240a(1) =3456240a(2) =5184240a(3) =6912240a(4) =8640240a(5) =10368240a(6) =12096240a(7) =13824240a(8) =15552240a(9) =17280240a(10) =19008240a(11) =20736240a(12) =22464240a(13) =24192240a(14) =25920240a(15) =27648240a(16) =29376240a(17) =31104240a(18) =32832240a(19) =34560240a(20) =36288240a(21) =38016240