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 A046026 #14 Feb 16 2025 08:32:38 %S A046026 2,2,2,3,3,3,5,7,13,7,5,17,7,7,11,23,13,5,5,5,11,17,7,23,19,13,41,7, %T A046026 43,23,47,17,19,11,19,29,13,17,31,13,11,67,23,7,71,53,37,11,13,29,41, %U A046026 83,17,43,29,89,13,31,47,19,17,101,17,103,7,53,107,109,11,37,113,19 %N A046026 Smallest prime p dividing n#-1, n#, or n#+1, n squarefree. %D A046026 C. Ashbacher, A Note on the Smarandache Near-To-Primorial Function, Smarandache Notions J. 7 (1996), 46-49. %D A046026 M. R. Mudge, The Smarandache Near-To-Primorial Function, Abstracts of Papers Presented to the Amer. Math. Soc., 17 (1996), 585 %H A046026 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SmarandacheNear-to-PrimorialFunction.html">Smarandache Near-to-Primorial Function</a> %F A046026 Smallest prime p such that n divides one of p#-1, p#, p#+1 %Y A046026 Cf. A002110 (primorial numbers), A046027, A013929. %K A046026 nonn %O A046026 1,1 %A A046026 _Eric W. Weisstein_