A054182 Number of positive integers <= 2^n of form 6 x^2 + 7 y^2.

0, 0, 0, 2, 3, 6, 11, 20, 36, 69, 126, 237, 446, 841, 1595, 3046, 5840, 11238, 21684, 41955, 81333, 158007, 307378, 598968, 1168767, 2283307, 4465653, 8742429, 17130723, 33594988, 65933365, 129491817, 254484590, 500430065, 984625784

Offset

0,4

Links

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

Index entries for sequences related to populations of quadratic forms

Crossrefs

Cf. A020689.

Sequence in context: A018076 A010033 A065615 * A358709 A346736 A335628

Adjacent sequences: A054179 A054180 A054181 * A054183 A054184 A054185

Keyword

nonn

Author

David W. Wilson

Status

approved