Values of n such that n^2 + (n-d)^2 is prime for a record first value of d.

Terms

a(0) =2a(1) =4a(2) =7a(3) =16a(4) =21a(5) =29a(6) =42a(7) =69a(8) =300a(9) =301a(10) =399a(11) =651a(12) =957a(13) =5931a(14) =8319a(15) =11778a(16) =13587a(17) =13704a(18) =15507a(19) =37452a(20) =37506a(21) =62766a(22) =94698a(23) =182193a(24) =217989a(25) =227247a(26) =306084a(27) =312018a(28) =318849a(29) =530607