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A055413 Number of points in Z^7 of norm <= n. 6

%I

%S 1,15,953,12435,88273,394691,1405325,4031123,10248133,23120727,

%T 48218513,93417543,172039681,299505299,503363697,813950491,1279144845,

%U 1950568311,2912136485,4244109647,6080556217,8545686087,11835454865

%N Number of points in Z^7 of norm <= n.

%H Andrew Howroyd, <a href="/A055413/b055413.txt">Table of n, a(n) for n = 0..500</a>

%F a(n) = [x^(n^2)] theta_3(x)^7/(1 - x), where theta_3() is the Jacobi theta function. - _Ilya Gutkovskiy_, Apr 14 2018

%Y Column k=7 of A302997.

%K nonn

%O 0,2

%A _David W. Wilson_

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Last modified January 19 05:41 EST 2022. Contains 350464 sequences. (Running on oeis4.)