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 A230760 #5 Oct 29 2013 14:09:28 %S A230760 7,45,286,2520,20122,148148,1007606,6254640,46181513,391594275, %T A230760 3034699661,21731298679,143399099473,855828562635,7344390292954, %U A230760 60173627260320,453178096117918,3155291100853892,20155636317704834,131804682060038201,1152529734625490207 %N A230760 Values of y such that x^2 + y^2 = 53^n with x and y coprime and 0 < x < y. %C A230760 The corresponding x-values are in A230759. %e A230760 a(3)=286 because 259^2+286^2=148877=53^3. %Y A230760 Cf. A230759. %Y A230760 Cf. A188949, A230623, A230645, A230711, A230713, A230744. %K A230760 nonn %O A230760 1,1 %A A230760 _Colin Barker_, Oct 29 2013