Numbers k such that the reversal of phi(k) is sigma(k)-k.

Terms

a(0) =2a(1) =11a(2) =101a(3) =735a(4) =7665a(5) =11505a(6) =16459a(7) =64578a(8) =378871a(9) =541033a(10) =3440409a(11) =5639353a(12) =5230000213a(13) =5762782573a(14) =5828558173a(15) =8130408803a(16) =8275586723a(17) =9738107377a(18) =11263073973a(19) =37057275961a(20) =38914628453a(21) =58285958173a(22) =231243884637a(23) =350649946051a(24) =380047486211a(25) =516420024613a(26) =547083380743a(27) =576216622573