Squarefree numbers n such that psi(phi(n)) = phi(psi(n) - n).

Terms

a(0) =2a(1) =30a(2) =35070a(3) =36570a(4) =43230a(5) =159810a(6) =224610a(7) =331170a(8) =525630a(9) =1039890a(10) =1094730a(11) =1290810a(12) =1656930a(13) =1770510a(14) =2139990a(15) =4878390a(16) =5110710a(17) =5996310a(18) =6052530a(19) =6127890a(20) =7493430a(21) =9918930a(22) =10146570a(23) =12171810a(24) =12551370a(25) =13821870a(26) =21398370a(27) =23282130a(28) =25587030a(29) =30223830