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Number of points in N^8 of norm <= n.
6

%I #11 Sep 29 2019 13:24:09

%S 1,9,171,1420,8262,33044,111155,312913,793049,1807754,3834490,7601982,

%T 14333819,25683401,44367189,73913316,119544010,187884853,288597817,

%U 433331391,638511294,923461382,1314459790,1842974369,2550288371

%N Number of points in N^8 of norm <= n.

%H Andrew Howroyd, <a href="/A055407/b055407.txt">Table of n, a(n) for n = 0..500</a>

%F a(n) = [x^(n^2)] (1 + theta_3(x))^8/(256*(1 - x)), where theta_3() is the Jacobi theta function. - _Ilya Gutkovskiy_, Apr 15 2018

%Y Column k=8 of A302998.

%K nonn

%O 0,2

%A _David W. Wilson_