Numbers k such that k^2 + (k+1)^2 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =7a(5) =9a(6) =12a(7) =14a(8) =17a(9) =19a(10) =22a(11) =24a(12) =25a(13) =29a(14) =30a(15) =32a(16) =34a(17) =35a(18) =39a(19) =42a(20) =47a(21) =50a(22) =60a(23) =65a(24) =69a(25) =70a(26) =72a(27) =79a(28) =82a(29) =84