a(n) is the number of composites k such that radical(k) = sopfr(k) = A350352(n).

Terms

a(0) =11a(1) =16a(2) =26a(3) =29a(4) =31a(5) =41a(6) =46a(7) =47a(8) =46a(9) =56a(10) =56a(11) =68a(12) =74a(13) =74a(14) =71a(15) =81a(16) =76a(17) =83a(18) =88a(19) =6489a(20) =91a(21) =101a(22) =106a(23) =107a(24) =101a(25) =116a(26) =106a(27) =120a(28) =126a(29) =116