Numbers k such that both k and k^2/2 are averages of twin prime pairs.

Terms

a(0) =6a(1) =12a(2) =42a(3) =72a(4) =600a(5) =642a(6) =882a(7) =2130a(8) =2382a(9) =2688a(10) =3558a(11) =3582a(12) =4548a(13) =6132a(14) =7548a(15) =8010a(16) =9042a(17) =13398a(18) =13932a(19) =15972a(20) =17598a(21) =19140a(22) =21492a(23) =26250a(24) =26262a(25) =34512a(26) =38670a(27) =39228a(28) =39342a(29) =48312