Primes that can be constructed by concatenating two squares >= 4.

Terms

a(0) =449a(1) =499a(2) =1009a(3) =1699a(4) =2549a(5) =4289a(6) =4441a(7) =4729a(8) =6449a(9) =6481a(10) =8419a(11) =9619a(12) =12149a(13) =14449a(14) =16361a(15) =16529a(16) =16729a(17) =16981a(18) =19681a(19) =21169a(20) =22549a(21) =24019a(22) =25121a(23) =25169a(24) =25841a(25) =28099a(26) =28949a(27) =30259a(28) =34819a(29) =36529