Intersection of A251964, A252280 and A252281.

Terms

a(0) =2a(1) =5a(2) =7a(3) =241a(4) =383a(5) =421a(6) =523a(7) =947a(8) =971a(9) =1013a(10) =1031a(11) =1033a(12) =1123a(13) =1973a(14) =2207a(15) =2311a(16) =2837a(17) =2927a(18) =4373a(19) =4721a(20) =5507a(21) =6301a(22) =8011a(23) =8297a(24) =9319a(25) =10141a(26) =12413a(27) =14071a(28) =14081a(29) =17957