Number of positive integers <= 2^n of form 5 x^2 + 8 y^2.

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =3a(5) =6a(6) =10a(7) =19a(8) =35a(9) =63a(10) =115a(11) =215a(12) =400a(13) =759a(14) =1430a(15) =2735a(16) =5236a(17) =10058a(18) =19392a(19) =37503a(20) =72686a(21) =141120a(22) =274439a(23) =534633a(24) =1042879a(25) =2036824a(26) =3982508a(27) =7794887a(28) =15270563a(29) =29941088