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 A265139 #14 May 07 2016 22:56:56 %S A265139 21821,24091,55201,55787,55807,103969,125597,127703,139291,149921, %T A265139 241771,244493,246889,284659,294731,377537,392233,409879,415937, %U A265139 418849,509797,560447,703679,746191,790927,845347,908491,929239,940829,949951,979189,1012159 %N A265139 Smallest primes of 3 X 3 semimagic squares formed from consecutive primes. %H A265139 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %e A265139 n = 2 %e A265139 |-----|-----|-----| %e A265139 |24091|24109|24137| %e A265139 |-----|-----|-----| %e A265139 |24113|24121|24103| %e A265139 |-----|-----|-----| %e A265139 |24133|24107|24097| %e A265139 |-----|-----|-----| %e A265139 . %e A265139 n = 3 %e A265139 |-----|-----|-----| %e A265139 |55201|55219|55259| %e A265139 |-----|-----|-----| %e A265139 |55229|55243|55207| %e A265139 |-----|-----|-----| %e A265139 |55249|55217|55213| %e A265139 |-----|-----|-----| %Y A265139 Cf. A265614, A270865. Supersequence of A256891. %K A265139 nonn %O A265139 1,1 %A A265139 _Arkadiusz Wesolowski_, Dec 02 2015