Numbers of form 4 x^2 + 7 y^2.

Terms

a(0) =0a(1) =4a(2) =7a(3) =11a(4) =16a(5) =23a(6) =28a(7) =32a(8) =36a(9) =43a(10) =44a(11) =63a(12) =64a(13) =67a(14) =71a(15) =79a(16) =92a(17) =99a(18) =100a(19) =107a(20) =112a(21) =116a(22) =127a(23) =128a(24) =144a(25) =148a(26) =151a(27) =163a(28) =172a(29) =175