Sum of n and partition number of n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =9a(5) =12a(6) =17a(7) =22a(8) =30a(9) =39a(10) =52a(11) =67a(12) =89a(13) =114a(14) =149a(15) =191a(16) =247a(17) =314a(18) =403a(19) =509a(20) =647a(21) =813a(22) =1024a(23) =1278a(24) =1599a(25) =1983a(26) =2462a(27) =3037a(28) =3746a(29) =4594