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 A353870 #11 May 09 2022 15:18:34 %S A353870 1,2,3,14,15,20,35,52,63,65,78,117,119,182,190,204,255,272,275,342, %T A353870 370,377,418,455,513,595,663,666,680,775,819,855,969,999,1045,1118, %U A353870 1292,1314,1330,1421,1460,1525,1547,1558,1615,1665,1768,1881,1885,1887,1925,1971,2190,2261,2328,2394,2470,2590,2639,2716 %N A353870 Primitive terms of A353868. %C A353870 Terms of A353868 that are neither a product of smaller terms nor a product of a term and a prime dividing it. %Y A353870 Squarefree terms form A353871. %Y A353870 Cf. A002322, A001615, A353868, A353869. %K A353870 nonn %O A353870 1,2 %A A353870 _Max Alekseyev_, May 08 2022