The number of squarefree abundant numbers whose largest prime divisor is prime(n).

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =5a(5) =13a(6) =27a(7) =59a(8) =125a(9) =257a(10) =534a(11) =1094a(12) =2244a(13) =4607a(14) =9407a(15) =19164a(16) =38939a(17) =79154a(18) =160473a(19) =325213a(20) =658940a(21) =1332598a(22) =2694009a(23) =5440236a(24) =10973874a(25) =22135366a(26) =44644593a(27) =89989907a(28) =181374472a(29) =365371286