Least prime signature numbers that are not a Jordan-Polya number.

Terms

a(0) =30a(1) =60a(2) =180a(3) =210a(4) =360a(5) =420a(6) =840a(7) =900a(8) =1080a(9) =1260a(10) =1680a(11) =1800a(12) =2160a(13) =2310a(14) =2520a(15) =3360a(16) =3600a(17) =4620a(18) =5400a(19) =6300a(20) =6480a(21) =6720a(22) =7200a(23) =7560a(24) =9240a(25) =10800a(26) =12600a(27) =12960a(28) =13440a(29) =13860