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 A380713 #15 Mar 27 2025 14:56:21 %S A380713 3,5,18521,19421,39827,44621,49121,57221,59627,65927,84221,86627, %T A380713 129221,139121,149627,153521,172421,182927,207521,209927,231821, %U A380713 238727,251621,254927,264827,274121,277427,289127,308927,317321,319727,321821,327827,329627,330821 %N A380713 Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2. %H A380713 Shyam Sunder Gupta, <a href="/A380713/b380713.txt">Table of n, a(n) for n = 1..3683</a> %H A380713 Shyam Sunder Gupta, <a href="https://doi.org/10.1007/978-981-97-2465-9_9">On Some Marvellous Numbers of Kaprekar</a>, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 9, 275-315. %Y A380713 Cf. A003052, A001359, A374101, A380715. %K A380713 nonn,base %O A380713 1,1 %A A380713 _Shyam Sunder Gupta_, Mar 27 2025