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A054187
Number of positive integers <= 2^n of form 7 x^2 + 8 y^2.
0
0, 0, 0, 2, 3, 5, 9, 17, 30, 57, 105, 199, 373, 701, 1345, 2575, 4954, 9562, 18509, 35916, 69837, 136010, 265251, 518118, 1013282, 1983707, 3887580, 7625434, 14969119, 29407328, 57811961, 113724176, 223843323, 440828855, 868596930
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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.
A020690
.
Sequence in context:
A326117
A319380
A213709
*
A383968
A014743
A345234
Adjacent sequences:
A054184
A054185
A054186
*
A054188
A054189
A054190
KEYWORD
nonn
AUTHOR
David W. Wilson
STATUS
approved
