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 A032718 #11 Aug 13 2024 11:14:13 %S A032718 0,2,3,5,6,9,11,18,21,23,27,29,30,32,36,42,44,48,56,59,60,62,63,65,66, %T A032718 69,74,77,78,84,86,87,90,98,99,102,104,105,108,111,117,119,125,128, %U A032718 131,143,144,146,149,152,158,159,161,165,167,171,177,180,182,186 %N A032718 Numbers k such that k prefixed by '1' and followed by '7' is prime. %Y A032718 Cf. A032702-A032733. %K A032718 nonn,base %O A032718 1,2 %A A032718 _Patrick De Geest_, May 15 1998 %E A032718 Offset changed by _Andrew Howroyd_, Aug 13 2024