Divisors of 1000.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =10a(6) =20a(7) =25a(8) =40a(9) =50a(10) =100a(11) =125a(12) =200a(13) =250a(14) =500a(15) =1000