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 A049041 #15 Feb 16 2025 08:32:40 %S A049041 2,4,6,6,5,7,7,12,22,16,55,54,42,24,25,86,97,133,64,94,72,58,49,69,19, %T A049041 78,14,208,167,138,80,59,63,142,41,110,22,286,39,84,215,80,14,305,188, %U A049041 151,53,187,180,44,32,83,92,300,16,421,146,507,28,243,119,429,239,415 %N A049041 Least k > 0 such that A049042(n) | A003422(k-1). %D A049041 F. Smarandache, Definitions solved and unsolved problems, conjectures and theorems in number theory and geometry, edited by M. Perez, Xiquan Publishing House, 2000. %H A049041 F. Smarandache, <a href="http://www.gallup.unm.edu/~smarandache/Definitions-book.pdf">Definitions, Solved and Unsolved Problems, Conjectures, ... </a> %H A049041 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Smarandache-KurepaFunction.html">Smarandache-Kurepa Function</a>. %Y A049041 Cf. A049042, A049043, A003422. %K A049041 nonn %O A049041 1,1 %A A049041 _David W. Wilson_