Numbers n such that n | Sigma_2(n) + Phi(n)^2.

Terms

a(0) =1a(1) =2a(2) =6a(3) =182a(4) =330a(5) =850a(6) =2150a(7) =5964a(8) =23028a(9) =85800a(10) =168150a(11) =172250a(12) =179850a(13) =308700a(14) =391300a(15) =484692a(16) =507725a(17) =1098750a(18) =1248148a(19) =1377075a(20) =3105218a(21) =4723500a(22) =9547650a(23) =17353350a(24) =22058792a(25) =37465350a(26) =47094425a(27) =54658450a(28) =110019000a(29) =144820200