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 A382167 #5 Mar 26 2025 09:12:41 %S A382167 3,5,7,9,222,88888,666666,7777777,44444444,555555555,3333333333, %T A382167 777777777777,999999999999,44444444444444,222222222222222, %U A382167 5555555555555555,333333333333333333,8888888888888888888,666666666666666666666,9999999999999999999999,77777777777777777777777,4444444444444444444444444 %N A382167 Repdigit self-numbers that are not in A337208. %H A382167 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. See Section 9.7.5. %Y A382167 Cf. A003052, A337208. %K A382167 nonn,base %O A382167 1,1 %A A382167 _N. J. A. Sloane_, Mar 26 2025