Numbers n such that if x = sigma(n)-phi(n)+tau(n)-n then n = sigma(x)-phi(x)+tau(x)-x.

Terms

a(0) =2a(1) =4a(2) =20a(3) =66a(4) =342a(5) =34092a(6) =40842a(7) =41922a(8) =46242a(9) =55422a(10) =207624a(11) =259448a(12) =533172a(13) =547300a(14) =571992a(15) =667408a(16) =1531032a(17) =1786288a(18) =10983114a(19) =114013752a(20) =133506680a(21) =323277822a(22) =347360860a(23) =386144360a(24) =387415458a(25) =459603716a(26) =476991704a(27) =1443279992a(28) =1539484232a(29) =15537978552