Numbers n such that sigma(reverse(n)) = phi(n).

Terms

a(0) =1a(1) =120a(2) =260a(3) =450a(4) =861a(5) =1411a(6) =1541a(7) =1550a(8) =7372a(9) =7957a(10) =8393a(11) =9312a(12) =13811a(13) =14840a(14) =20440a(15) =26060a(16) =38323a(17) =41550a(18) =46990a(19) =49813a(20) =51412a(21) =61050a(22) =77695a(23) =78625a(24) =86691a(25) =94604a(26) =94632a(27) =138631a(28) =143520a(29) =166331