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 A048542 #13 Feb 16 2025 08:32:40 %S A048542 6,3660,66306,666672,16666806,6066462656,66686606406,666692662656, %T A048542 20666666069660,666676608666642,10666051666666662,664566666660662640, %U A048542 666626669666607656,6666086666606866662,616766666966468666660,66636666164666636562656,1536666668666666766166056 %N A048542 Smallest oblong (promic) number containing exactly n 6's. %H A048542 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PronicNumber.html">Pronic Number</a> %Y A048542 Cf. A048541, A002378. %Y A048542 Cf. A048530, A048532, A048534, A048536, A048538, A048540, A048544, A048546, A048548. %K A048542 nonn,base %O A048542 1,1 %A A048542 _Patrick De Geest_, May 15 1999 %E A048542 a(14)-a(17) from _Giovanni Resta_, Oct 09 2019