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 A065688 #35 Feb 16 2025 08:32:45 %S A065688 2,3,5,5,5,7,11,11,11,11,11,11,11,11,11,13,13,13,13,29,29,19,19 %N A065688 First prime in the smallest (nontrivial) prime k-tuplet. %C A065688 For a proper definition see the cross-references. %H A065688 T. Forbes, Norman Luhn, <a href="http://www.pzktupel.de/ktuplets.htm">Prime k-tuplets</a> %H A065688 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/k-TupleConjecture.html">k-Tuple Conjecture</a> %e A065688 a(8): 11 13 17 19 23 29 31 37 are primes and 37-11=26=A008407(8). %Y A065688 Cf. A008407 (minimal difference of first and last prime in a prime k-tuplet), A023193 (prime k-tuplet conjectures), A047947 (Schinzel's rhobar), A020497. %Y A065688 Cf. A261324 (another variant including trivial tuplets). %K A065688 more,nonn %O A065688 1,1 %A A065688 _Frank Ellermann_, Dec 04 2001 %E A065688 a(1) prepended and a(20)-a(23) added by _Max Alekseyev_, Aug 15 2015