A054194 Number of positive integers <= 2^n of form 9 x^2 + 10 y^2.

0, 0, 0, 0, 2, 3, 7, 14, 26, 49, 92, 171, 328, 618, 1182, 2267, 4375, 8451, 16383, 31797, 61891, 120644, 235516, 460327, 900867, 1765050, 3461135, 6793369, 13343702, 26229268, 51591736, 101539731, 199957547, 393974549, 776621316, 1531612324

Offset

0,5

Links

Table of n, a(n) for n=0..35.

Index entries for sequences related to populations of quadratic forms

Crossrefs

Cf. A020694.

Sequence in context: A225879 A027957 A300569 * A138651 A131300 A333342

Adjacent sequences: A054191 A054192 A054193 * A054195 A054196 A054197

Keyword

nonn

Author

David W. Wilson

Status

approved