Primes which can be represented as the sum of a triangular number and its reverse.

Terms

a(0) =2a(1) =11a(2) =281a(3) =21701a(4) =42923a(5) =72227a(6) =73037a(7) =78887a(8) =79697a(9) =100109a(10) =119891a(11) =122321a(12) =128981a(13) =138683a(14) =178697a(15) =1360631a(16) =1394831a(17) =1591841a(18) =1598951a(19) =1607051a(20) =1958591a(21) =1982891a(22) =2188811a(23) =2401031a(24) =2490941a(25) =2793071a(26) =3382733a(27) =3555443a(28) =3586853