Numbers k such that sigma(k) mod pi(k) = 1.

Terms

a(0) =4a(1) =9a(2) =16a(3) =64a(4) =69a(5) =218a(6) =592a(7) =808a(8) =910a(9) =1921a(10) =1957a(11) =2648a(12) =2860a(13) =7609a(14) =13462a(15) =14953a(16) =16838a(17) =20688a(18) =27050a(19) =44471a(20) =80440a(21) =91860a(22) =122351a(23) =131095a(24) =154606a(25) =166121a(26) =171396a(27) =226831a(28) =257467a(29) =318016