Numbers k such that 26*k+1 is a square.

Terms

a(0) =0a(1) =24a(2) =28a(3) =100a(4) =108a(5) =228a(6) =240a(7) =408a(8) =424a(9) =640a(10) =660a(11) =924a(12) =948a(13) =1260a(14) =1288a(15) =1648a(16) =1680a(17) =2088a(18) =2124a(19) =2580a(20) =2620a(21) =3124a(22) =3168a(23) =3720a(24) =3768a(25) =4368a(26) =4420a(27) =5068a(28) =5124a(29) =5820