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 A032520 #5 May 03 2015 18:01:08
%S A032520 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,22,24,26,28,30,
%T A032520 32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,
%U A032520 78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116
%N A032520 Sum of the integer part of 13/3-th roots of integers less than n.
%t A032520 Accumulate[Table[Floor[Surd[n^3,13]],{n,0,70}]] (* _Harvey P. Dale_, May 03 2015 *)
%K A032520 nonn
%O A032520 0,3
%A A032520 Michel Tixier (tixier(AT)dyadel.net)