Number of partitions of n into parts having at most two prime-factors.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =11a(6) =15a(7) =21a(8) =29a(9) =40a(10) =53a(11) =71a(12) =93a(13) =122a(14) =158a(15) =203a(16) =259a(17) =329a(18) =415a(19) =521a(20) =651a(21) =809a(22) =1001a(23) =1234a(24) =1515a(25) =1853a(26) =2258a(27) =2743a(28) =3321a(29) =4009