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 A032571 #10 Jan 18 2025 12:54:36 %S A032571 1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,195,200,300,400,500, %T A032571 600,700,800,900,1000,1280,1320,1898,1948,1950,2000,2640,3000,3960, %U A032571 4000,5000,6000,7000,8000,9000,10000,12800,13200,15545,16000 %N A032571 Numbers k whose decimal representation, read as a base-20 value and divided by k, yields an integer. %C A032571 Original name: Base 20 value of decimal denominator divided by this decimal value (n) is an integer. %e A032571 195 is a term: 195_20 = 585 = 195*3. - _Jon E. Schoenfield_, Oct 25 2019 %t A032571 Select[Range[20000],IntegerQ[FromDigits[IntegerDigits[#],20]/#]&] (* _Harvey P. Dale_, Jan 18 2025 *) %Y A032571 Cf. A032572. See also A032563 for explanation. %K A032571 nonn,base %O A032571 1,2 %A A032571 _Patrick De Geest_, Apr 15 1998 %E A032571 Offset changed and Name edited by _Jon E. Schoenfield_, Oct 25 2019