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

Terms

a(0) =3a(1) =70a(2) =138a(3) =792a(4) =924a(5) =1692a(6) =1932a(7) =2124a(8) =2250a(9) =2988a(10) =3852a(11) =30936a(12) =112644a(13) =189252a(14) =240120a(15) =261660a(16) =263928a(17) =338760a(18) =364308a(19) =379470a(20) =390432a(21) =504216a(22) =529110a(23) =785568a(24) =862290a(25) =917700a(26) =979596a(27) =1022310a(28) =1124220a(29) =1404270