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 A271022 #8 Apr 05 2016 00:20:19 %S A271022 394310739,500961771,929224371,1025775531,1059837819,3548796651, %T A271022 4508655939,6001029211,8363019339,9231979779,9538540371,9857768475, %U A271022 12524044275,15048773931,17542500091,19321226211,23230609275,24547126779,25644388275,26495945475,29179154203,31939169859 %N A271022 Magic sums of 3 X 3 semimagic squares of odd squares whose rows, columns, and at least one of the two main diagonals sum to the same number. %H A271022 Arkadiusz Wesolowski, <a href="/A271022/a271022.txt">Examples of these semimagic squares</a> %H A271022 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %F A271022 a(n) = 8*A271020(n) + 3. %F A271022 A269297 INTERSECT A271021. %Y A271022 Cf. A271020, A271021, A269297, A271142. Subsequence of A271021. %K A271022 nonn %O A271022 1,1 %A A271022 _Arkadiusz Wesolowski_, Mar 28 2016