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 A046948 #7 Jan 14 2024 07:51:55 %S A046948 1,241,2401,9121,26641,56881,117361,199921,340321,522001,794161, %T A046948 1113841,1604401,2131921,2874961,3721681,4845121,6024481,7659601, %U A046948 9306001,11513521,13825201,16702321,19622641,23553841,27334081 %N A046948 Sizes of successive balls in E_8 lattice. %F A046948 a(n) ~ 2 * Pi^4 * n^4 / 3. - _Vaclav Kotesovec_, Jan 14 2024 %o A046948 (PARI) B=1; th=[ 1 ]; bl=[ 1 ]; for (n=1,10000,t1=divisors(n); t2=0; for (i=1,length(t1),t2=t2+t1[ i ]^3); t3=240*t2; th=concat(th,t3); B=B+t3; bl=concat(bl,B)); th; bl; %Y A046948 Partial sums of A004009. %K A046948 nonn %O A046948 0,2 %A A046948 _N. J. A. Sloane_