This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A055408 #11 Sep 29 2019 13:24:28 %S A055408 1,10,265,2780,19250,91067,349122,1115334,3134307,7903501,18286018, %T A055408 39418159,79946582,154050794,283766861,503208408,861586362,1432132554, %U A055408 2314882321,3655071196,5640732550,8538547541,12683700617,18541085573 %N A055408 Number of points in N^9 of norm <= n. %H A055408 Andrew Howroyd, <a href="/A055408/b055408.txt">Table of n, a(n) for n = 0..500</a> %F A055408 a(n) = [x^(n^2)] (1 + theta_3(x))^9/(512*(1 - x)), where theta_3() is the Jacobi theta function. - _Ilya Gutkovskiy_, Apr 15 2018 %Y A055408 Column k=9 of A302998. %K A055408 nonn %O A055408 0,2 %A A055408 _David W. Wilson_