A374713 - OEIS

%I #7 Jul 17 2024 09:55:12

%S 1,4,10,20,35,55,83,119,164,218,280,343,431,535,648,760,903,1064,1241,

%T 1442,1659,1891,2151,2409,2714,3044,3369,3754,4160,4582,5044,5499,

%U 6015,6500,7094,7669,8308,8990,9683,10394,11180,12010,12876,13773,14720,15693,16721,17705,18845,20010

%N Number of distinct sums i^3 + j^3 + k^3 for 1<=i<=j<=k<=n.

%o (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 Cf. A061791, A374714.

%Y Cf. A374715.

%K nonn

%O 1,2

%A _Seiichi Manyama_, Jul 17 2024