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 A032573 #8 Oct 25 2019 17:44:42 %S A032573 1,2,3,4,5,6,7,8,9,11,22,33,44,55,66,77,88,99,121,242,363,484,1331, %T A032573 1837,2662,3146,3993,14641,16940,93753,139838,144096,154396,177870, %U A032573 196383,268950,292298,363484,1148136,1630222,1963830,3615999 %N A032573 Numbers k whose decimal representation, read as a base-21 value and divided by k, yields an integer. %C A032573 Original name: Base 21 value of decimal denominator divided by this decimal value (n) is an integer. %e A032573 1837 is a term: 1837_21 = 12859 = 1837*7. - _Jon E. Schoenfield_, Oct 25 2019 %Y A032573 Cf. A032574. See also A032563 for explanation. %K A032573 nonn,base %O A032573 1,2 %A A032573 _Patrick De Geest_, Apr 15 1998 %E A032573 Offset changed and Name edited by _Jon E. Schoenfield_, Oct 25 2019