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 A232491 #22 Jun 20 2025 10:44:39 %S A232491 6,16,26,36,46,57,67,77,87,97,107,116,126,136,146,157,167,177,187,197, %T A232491 207,217,226,236,246,257,267,277,287,297,307,317,327,336,346,357,367, %U A232491 377,387,397,407,417,427,437,457,467,477,487,497,507,517,527,537,547,567,577,587,597,607,617,627,637,647,658,668,677,687,697 %N A232491 Numbers k such that 10^k is not of the form m + sum of digits of m. %D A232491 M. Gardner, Time Travel and Other Mathematical Bewilderments. Freeman, NY, 1988, pp. 115-117 and 122. %D A232491 D. R. Kaprekar, Puzzles of the Self-Numbers. 311 Devlali Camp, Devlali, India, 1959. %D A232491 D. R. Kaprekar, The Mathematics of the New Self Numbers (Part V). 311 Devlali Camp, Devlali, India, 1967. %H A232491 Donovan Johnson, <a href="/A232491/b232491.txt">Table of n, a(n) for n = 1..10000</a> %H A232491 T. Trotter, <a href="http://www.trottermath.net/numthry/charlene.html">Charlene Numbers</a> %H A232491 <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a> %Y A232491 Cf. A062028, A232489, A232490. %K A232491 nonn,base %O A232491 1,1 %A A232491 _N. J. A. Sloane_, Dec 01 2013 %E A232491 Terms a(3) onward from _Max Alekseyev_, Dec 02 2013