2-nadirs of phi: numbers k such that phi(k-2) > phi(k-1) > phi(k) < phi(k+1) < phi(k+2).

Terms

a(0) =315a(1) =525a(2) =735a(3) =1155a(4) =1365a(5) =1575a(6) =1755a(7) =1785a(8) =1815a(9) =1995a(10) =2145a(11) =2415a(12) =2475a(13) =2805a(14) =3045a(15) =3315a(16) =3465a(17) =3885a(18) =4095a(19) =4125a(20) =4305a(21) =4515a(22) =4725a(23) =4935a(24) =5115a(25) =5145a(26) =5355a(27) =5775a(28) =6045a(29) =6195