Numbers represented by quadratic form with Gram matrix [ 2, 1; 1, 4 ] (or the Kleinian 2-d lattice, see A002652).

A028951

Numbers represented by quadratic form with Gram matrix [ 2, 1; 1, 4 ] (or the Kleinian 2-d lattice, see A002652).

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =7a(5) =8a(6) =9a(7) =11a(8) =14a(9) =16a(10) =18a(11) =22a(12) =23a(13) =25a(14) =28a(15) =29a(16) =32a(17) =36a(18) =37a(19) =43a(20) =44a(21) =46a(22) =49a(23) =50a(24) =53a(25) =56a(26) =58a(27) =63a(28) =64a(29) =67

External references