Numbers n such that phi(n) = sigma(n) - reversal(sigma(n)).

Terms

a(0) =19a(1) =199a(2) =437a(3) =603a(4) =1999a(5) =12834a(6) =16348a(7) =21293a(8) =22183a(9) =23383a(10) =25273a(11) =27263a(12) =44377a(13) =46367a(14) =199999a(15) =670661a(16) =691351a(17) =803851a(18) =845321a(19) =1425650a(20) =2103643a(21) =2111191a(22) =2123893a(23) =2174143a(24) =2543773a(25) =2552723a(26) =2753713a(27) =3791659a(28) =4003997a(29) =4034347