Largest number k such that exactly half the numbers in [1..k] are prime(n)-smooth.

Terms

a(0) =8a(1) =20a(2) =42a(3) =84a(4) =128a(5) =184a(6) =256a(7) =332a(8) =432a(9) =534a(10) =654a(11) =784a(12) =906a(13) =1060a(14) =1226a(15) =1388a(16) =1568a(17) =1772a(18) =1962a(19) =2166a(20) =2420a(21) =2646a(22) =2928a(23) =3162a(24) =3424a(25) =3692a(26) =3986a(27) =4308a(28) =4630a(29) =4984