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 A382797 #12 Apr 06 2025 15:01:23 %S A382797 1,3,11,13,47,53,57,69,77,87,97,99,131,145,155,175,177,189,197,209, %T A382797 219,221,241,243,253,273,309,319,339,341,363,409,429,431,441,451,483, %U A382797 485,497,585,605,607,627,673,685,695,739,751,781,783,847,849,861,891 %N A382797 Odd Ulam numbers. %H A382797 Shyam Sunder Gupta, <a href="/A382797/b382797.txt">Table of n, a(n) for n = 1..9957</a> %H A382797 Shyam Sunder Gupta, <a href="https://doi.org/10.1007/978-981-97-2465-9_18">Ulam Numbers</a>. In: Exploring the Beauty of Fascinating Numbers. Springer Praxis Books(). Springer, Singapore, (2025). %Y A382797 Intersection of A005408 and A002858. %K A382797 nonn %O A382797 1,2 %A A382797 _Shyam Sunder Gupta_, Apr 05 2025