Number of partitions of n minus number of divisors of n.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =5a(5) =7a(6) =13a(7) =18a(8) =27a(9) =38a(10) =54a(11) =71a(12) =99a(13) =131a(14) =172a(15) =226a(16) =295a(17) =379a(18) =488a(19) =621a(20) =788a(21) =998a(22) =1253a(23) =1567a(24) =1955a(25) =2432a(26) =3006a(27) =3712a(28) =4563a(29) =5596