Numbers of the form (5^i)*(12^j), with i, j >= 0.

Terms

a(0) =1a(1) =5a(2) =12a(3) =25a(4) =60a(5) =125a(6) =144a(7) =300a(8) =625a(9) =720a(10) =1500a(11) =1728a(12) =3125a(13) =3600a(14) =7500a(15) =8640a(16) =15625a(17) =18000a(18) =20736a(19) =37500a(20) =43200a(21) =78125a(22) =90000a(23) =103680a(24) =187500a(25) =216000a(26) =248832a(27) =390625a(28) =450000a(29) =518400