Number of ways to write n as n = x*y*z with 1 <= x <= y <= z.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =2a(6) =1a(7) =3a(8) =2a(9) =2a(10) =1a(11) =4a(12) =1a(13) =2a(14) =2a(15) =4a(16) =1a(17) =4a(18) =1a(19) =4a(20) =2a(21) =2a(22) =1a(23) =6a(24) =2a(25) =2a(26) =3a(27) =4a(28) =1a(29) =5