a(n) = sum of divisors of A094348(n).

Terms

a(0) =1a(1) =3a(2) =7a(3) =12a(4) =28a(5) =60a(6) =91a(7) =124a(8) =168a(9) =195a(10) =360a(11) =546a(12) =744a(13) =1170a(14) =1344a(15) =2418a(16) =2880a(17) =4368a(18) =5952a(19) =9360a(20) =19344a(21) =28800a(22) =39312a(23) =59520a(24) =79248a(25) =99944a(26) =112320a(27) =120960a(28) =180048a(29) =203112