Numbers n such that phi(sigma(n)) + sigma(phi(n)) is the mean value of phi(n) and sigma(n).

Terms

a(0) =6a(1) =37716a(2) =58710a(3) =120930a(4) =1269432a(5) =2663850a(6) =3349170a(7) =3995244a(8) =4353426a(9) =5468424a(10) =7191072a(11) =7437960a(12) =7564128a(13) =7613892a(14) =8354610a(15) =8810490a(16) =10309410a(17) =11917620a(18) =13573500a(19) =21970980a(20) =23877450a(21) =24712350a(22) =38801790a(23) =49394556a(24) =56208264a(25) =56809578a(26) =57339150a(27) =66379170a(28) =77966616a(29) =91549710