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 A269344 #12 Apr 29 2016 23:39:52 %S A269344 5691,26859,27531,85659,93219,111699,113331,155739,179091,203571, %T A269344 228459,239379,277419,281499,344931,376971,469011,487491,490299, %U A269344 520491,583779,631491,679539,806547,851211,896091,922659,1004379,1067619,1099539,1119459,1134771 %N A269344 Magic sums of 3 X 3 semimagic squares composed of squares of primes. %H A269344 Arkadiusz Wesolowski, <a href="/A269344/a269344.txt">Examples of these semimagic squares</a> %H A269344 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %e A269344 Examples of 3 X 3 semimagic squares composed of squares of primes. %e A269344 . %e A269344 |-----|-----|-----| %e A269344 | 11^2| 23^2| 71^2| %e A269344 |-----|-----|-----| %e A269344 | 43^2| 59^2| 19^2| %e A269344 |-----|-----|-----| %e A269344 | 61^2| 41^2| 17^2| %e A269344 |-----|-----|-----| %e A269344 The magic constant is 5691 = a(1). %e A269344 . %e A269344 |-----|-----|-----| %e A269344 | 13^2| 67^2|149^2| %e A269344 |-----|-----|-----| %e A269344 | 89^2|127^2| 53^2| %e A269344 |-----|-----|-----| %e A269344 |137^2| 79^2| 43^2| %e A269344 |-----|-----|-----| %e A269344 The magic constant is 26859 = a(2). %Y A269344 Cf. A269061. Subsequence of A269297. %K A269344 nonn %O A269344 1,1 %A A269344 _Arkadiusz Wesolowski_, Apr 16 2016