A054167 Number of positive integers <= 2^n of form 3 x^2 + 10 y^2.

0, 0, 1, 1, 4, 6, 12, 23, 42, 76, 143, 262, 496, 938, 1783, 3397, 6515, 12523, 24152, 46711, 90543, 175867, 342161, 666712, 1300805, 2541033, 4969255, 9727606, 19059560, 37374839, 73347038, 144042897, 283064780, 556601613, 1095087697

Offset

0,5

Links

Table of n, a(n) for n=0..34.

Index entries for sequences related to populations of quadratic forms

Crossrefs

Cf. A020681.

Sequence in context: A255843 A098145 A307189 * A303198 A120211 A308471

Adjacent sequences: A054164 A054165 A054166 * A054168 A054169 A054170

Keyword

nonn

Author

David W. Wilson

Status

approved