Sum of two integers when equal to the product of their prime-counting functions.

Terms

a(0) =12a(1) =16a(2) =18a(3) =20a(4) =24a(5) =28a(6) =32a(7) =36a(8) =40a(9) =44a(10) =48a(11) =52a(12) =56a(13) =60a(14) =64a(15) =68a(16) =72a(17) =76a(18) =80a(19) =84a(20) =88a(21) =92a(22) =96a(23) =116a(24) =120a(25) =280a(26) =310a(27) =325a(28) =330a(29) =942