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

Terms

a(0) =6a(1) =20a(2) =42a(3) =78a(4) =118a(5) =184a(6) =248a(7) =332a(8) =428a(9) =534a(10) =654a(11) =772a(12) =906a(13) =1052a(14) =1208a(15) =1388a(16) =1562a(17) =1754a(18) =1958a(19) =2164a(20) =2396a(21) =2638a(22) =2896a(23) =3144a(24) =3424a(25) =3682a(26) =3986a(27) =4304a(28) =4622a(29) =4976