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A054232
Number of positive integers <= 2^n of form x^2 + 19 y^2.
0
1, 1, 2, 2, 4, 9, 15, 29, 52, 96, 179, 336, 640, 1218, 2338, 4507, 8706, 16874, 32808, 63863, 124599, 243437, 476164, 932611, 1828498, 3588303, 7047954, 13853566, 27250355, 53636267, 105633670, 208154090, 410381069, 809456768, 1597319534
OFFSET
0,3
CROSSREFS
Sequence in context: A054233 A054231 A054230 * A100048 A052935 A365091
KEYWORD
nonn
STATUS
approved