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 A048532 #13 Feb 16 2025 08:32:40 %S A048532 12,110,11130,1021110,104111412,1151143112,11141119152,112311111512, %T A048532 1111191111030,151611114111162,10115118111141192,111017111111636112, %U A048532 1111111811261716110,18161111191151111150,911115011111211111170,17711116111217141111112,110111041311117211111110 %N A048532 Smallest oblong (promic) number containing exactly n 1's. %H A048532 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PronicNumber.html">Pronic Number</a> %Y A048532 Cf. A048531, A002378. %Y A048532 Cf. A048530, A048534, A048536, A048538, A048540, A048542, A048544, A048546, A048548. %K A048532 nonn,base %O A048532 1,1 %A A048532 _Patrick De Geest_, May 15 1999 %E A048532 a(13)-a(17) from _Giovanni Resta_, Oct 09 2019