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 A245625 #14 Nov 07 2014 00:11:41 %S A245625 0,2,1,13,4,34,9,65,16,106,25,157,36,218,49,289,64,370,81,461,100,562, %T A245625 121,673,144,794,169,925,196,1066,225,1217,256,1378,1514,324,1693,361, %U A245625 1882,400,2081,441,2290,484,2509,529,2738,576,2977,625,3226,676,3485,729,3754,784,4033,841 %N A245625 Sequence of distinct least nonnegative numbers such that the average of the first n terms is a square. %o A245625 (PARI) v=[]; n=0; while(n<10^4, num=(vecsum(v)+n); if(num%(#v+1)==0&&vecsearch(vecsort(v), n)==0, for(i=0, n, if(i^2>(num/(#v+1)), break); if(i^2==(num/(#v+1)), print1(n, ", "); v=concat(v, n); n=0; break))); n++) %Y A245625 Cf. A085047. %K A245625 nonn %O A245625 1,2 %A A245625 _Derek Orr_, Nov 05 2014