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

A066945

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

Terms

    a(0) =11a(1) =11063a(2) =11943a(3) =38585a(4) =39995a(5) =43021a(6) =63349a(7) =67709a(8) =967393a(9) =1267511a(10) =2020925a(11) =2915307a(12) =5805559a(13) =6584747a(14) =6659429a(15) =8064017a(16) =26260385a(17) =27681847a(18) =31886881a(19) =41932769a(20) =48922307a(21) =61270145a(22) =71429011a(23) =89087903a(24) =91364345a(25) =191945623

External references