Numbers of form 5^i*8^j, with i, j >= 0.

Terms

a(0) =1a(1) =5a(2) =8a(3) =25a(4) =40a(5) =64a(6) =125a(7) =200a(8) =320a(9) =512a(10) =625a(11) =1000a(12) =1600a(13) =2560a(14) =3125a(15) =4096a(16) =5000a(17) =8000a(18) =12800a(19) =15625a(20) =20480a(21) =25000a(22) =32768a(23) =40000a(24) =64000a(25) =78125a(26) =102400a(27) =125000a(28) =163840a(29) =200000