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 A248403 #13 Oct 13 2019 04:17:52 %S A248403 2,10,58,74,114,122,130,170,258,290,314,346,354,362,370,402,474,506, %T A248403 586,610,618,642,714,730,746,786,826,906,922,946,962,970,986,1066, %U A248403 1074,1090,1162,1194,1218,1258,1306,1338,1378,1474,1506,1514,1554,1562,1626,1658 %N A248403 Noncongruent squarefree numbers n with A248395(n)/d(n) = 1, where d(n) = A000005(n). %H A248403 J. B. Tunnell, <a href="http://dx.doi.org/10.1007/BF01389327">A classical Diophantine problem and modular forms of weight 3/2</a>, Invent. Math., 72 (1983), 323-334. %Y A248403 Cf. A000005, A003273, A248394, A248395, A248397-A248406. %K A248403 nonn %O A248403 1,1 %A A248403 _N. J. A. Sloane_, Oct 20 2014 %E A248403 More terms from _Amiram Eldar_, Oct 13 2019