Numbers k such that (k^2 - 14)/2 is a square.

Terms

a(0) =4a(1) =8a(2) =16a(3) =44a(4) =92a(5) =256a(6) =536a(7) =1492a(8) =3124a(9) =8696a(10) =18208a(11) =50684a(12) =106124a(13) =295408a(14) =618536a(15) =1721764a(16) =3605092a(17) =10035176a(18) =21012016a(19) =58489292a(20) =122467004a(21) =340900576a(22) =713790008a(23) =1986914164a(24) =4160273044a(25) =11580584408a(26) =24247848256a(27) =67496592284