Number of partitions of n plus number of divisors of n.

Terms

a(0) =2a(1) =4a(2) =5a(3) =8a(4) =9a(5) =15a(6) =17a(7) =26a(8) =33a(9) =46a(10) =58a(11) =83a(12) =103a(13) =139a(14) =180a(15) =236a(16) =299a(17) =391a(18) =492a(19) =633a(20) =796a(21) =1006a(22) =1257a(23) =1583a(24) =1961a(25) =2440a(26) =3014a(27) =3724a(28) =4567a(29) =5612