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 A382452 #14 Apr 01 2025 23:14:31 %S A382452 5,13,102,983,9784,97786,977787,9777788,97777789,977777790,9777777791 %N A382452 Number of self numbers <= 10^n. %H A382452 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 A382452 Cf. A003052. %K A382452 nonn,base,more %O A382452 1,1 %A A382452 _Shyam Sunder Gupta_, Mar 27 2025