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 A191862 #20 May 12 2023 14:58:52 %S A191862 1,1,1,3,1,2,7,1,5,1,7,1,2,1,23,1,7,99,1,4,5,43,1,1,9,51,3,1,1,1,5,47, %T A191862 4005,16,277,1,11,4,193,57,191,3,1,1,2,3383,7,21,70,20621,1,13,5,17, %U A191862 20,25,51,217,1,7,9041,5,1,416941,1,251,1,1,15,3,5 %N A191862 First member of a pair of numbers occurring in the definition of 2-happy couples. %H A191862 Reinhard Zumkeller, <a href="/A191862/b191862.txt">Table of n, a(n) for n = 1..99</a> %H A191862 J. H. Conway, <a href="http://www.cs.uwaterloo.ca/journals/JIS/happy.html">On Happy Factorizations</a>, J. Integer Sequences, Vol. 1, 1998, #1. %H A191862 <a href="/A007968/a007968.txt">Initial Happy Factorization Data</a> %o A191862 (Haskell) %o A191862 a191862 = fst . sqrtPair . a007970 %o A191862 -- Function sqrtPair is defined in A007968. %o A191862 -- _Reinhard Zumkeller_, Oct 11 2015 %Y A191862 Cf. A007968, A007970. %K A191862 nonn %O A191862 1,4 %A A191862 _Reinhard Zumkeller_, Jun 18 2011 %E A191862 Wrong comment and wrong formula removed (thanks to _Wolfdieter Lang_, who pointed this out) by _Reinhard Zumkeller_, Oct 11 2015