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 A165815 #4 Aug 04 2025 14:59:40 %S A165815 5,7,13,23,29,31,37,41,47,53,61,71,79,101,103,109,127,137,149,151,157, %T A165815 167,173,181,191,197,199,223,229,239,257,263,269,271,277,293,311,313, %U A165815 317,349,353,359,367,373,383,389,397,421,431,439,457,461,463,479,487 %N A165815 Prime congruent numbers (A003273). %C A165815 Heegner proved that every prime p with p = 5 or 7 (mod 8) is a congruent number. See A003628 for those primes. %D A165815 Kurt Heegner, Diophantische Analysis und Modulfunktionen, Math. Zeitschrift 56 (1952), 227-253. %H A165815 Kent E. Morrison, <a href="http://www.aimath.org/news/congruentnumbers/congruentnumbers.pdf">Congruent Numbers</a> %Y A165815 Cf. A003273, A003628. %K A165815 nonn %O A165815 1,1 %A A165815 _T. D. Noe_, Sep 28 2009