a(1) = 1, and then a(n) is sum of k*a(k) where k<n and k divides n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =6a(6) =1a(7) =15a(8) =4a(9) =8a(10) =1a(11) =54a(12) =1a(13) =10a(14) =9a(15) =135a(16) =1a(17) =78a(18) =1a(19) =100a(20) =11a(21) =14a(22) =1a(23) =822a(24) =6a(25) =16a(26) =40a(27) =162a(28) =1a(29) =262