Numbers k such that phi(k) = tau(k)^2.

Terms

a(0) =1a(1) =5a(2) =34a(3) =63a(4) =76a(5) =128a(6) =136a(7) =170a(8) =315a(9) =364a(10) =380a(11) =444a(12) =640a(13) =680a(14) =972a(15) =1820a(16) =1824a(17) =1836a(18) =2142a(19) =2220a(20) =4788a(21) =4860a(22) =6000a(23) =8064a(24) =8568a(25) =8736a(26) =9120a(27) =9180a(28) =10710a(29) =23940