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 A374713 #7 Jul 17 2024 09:55:12 %S A374713 1,4,10,20,35,55,83,119,164,218,280,343,431,535,648,760,903,1064,1241, %T A374713 1442,1659,1891,2151,2409,2714,3044,3369,3754,4160,4582,5044,5499, %U A374713 6015,6500,7094,7669,8308,8990,9683,10394,11180,12010,12876,13773,14720,15693,16721,17705,18845,20010 %N A374713 Number of distinct sums i^3 + j^3 + k^3 for 1<=i<=j<=k<=n. %o A374713 (PARI) a(n) = my(v=vector(3*n^3)); for(i=1, n, for(j=i, n, for(k=j, n, v[i^3+j^3+k^3]+=1))); sum(i=1, #v, v[i]>0); %Y A374713 Cf. A061791, A374714. %Y A374713 Cf. A374715. %K A374713 nonn %O A374713 1,2 %A A374713 _Seiichi Manyama_, Jul 17 2024