Babylonian reciprocals - factors needed to turn an ugly number into a power of sixty.

Terms

a(0) =60a(1) =30a(2) =20a(3) =15a(4) =12a(5) =10a(6) =450a(7) =400a(8) =6a(9) =5a(10) =4a(11) =225a(12) =200a(13) =3a(14) =150a(15) =144a(16) =8000a(17) =2a(18) =6750a(19) =100a(20) =90a(21) =80a(22) =75a(23) =72a(24) =4000a(25) =1a(26) =3375a(27) =50a(28) =48a(29) =45