Number of positive integers <= 2^n of form 5 x^2 + 6 y^2.

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =3a(5) =7a(6) =12a(7) =22a(8) =42a(9) =78a(10) =141a(11) =264a(12) =494a(13) =936a(14) =1778a(15) =3397a(16) =6511a(17) =12523a(18) =24149a(19) =46713a(20) =90531a(21) =175865a(22) =342166a(23) =666693a(24) =1300774a(25) =2541095a(26) =4969243a(27) =9727574a(28) =19059405a(29) =37374922