Numbers k such that pi(k) = sopf(k) where sopf(k) is sum of distinct prime factors of k (A008472).

Terms

a(0) =1a(1) =4a(2) =12a(3) =28a(4) =30a(5) =52a(6) =55a(7) =65a(8) =68a(9) =76a(10) =95a(11) =145a(12) =155a(13) =185a(14) =205a(15) =822a(16) =894a(17) =2779a(18) =2863a(19) =8392a(20) =23481a(21) =24093a(22) =24237a(23) =64270a(24) =174691a(25) =174779a(26) =1301989a(27) =1302457a(28) =3523478a(29) =9554955