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 A116670 #9 Apr 08 2022 10:25:38 %S A116670 102345678,102345679,102345687,102345689,102345697,102345698, %T A116670 102345768,102345769,102345786,102345789,102345796,102345798, %U A116670 102345867,102345869,102345876,102345879,102345896,102345897,102345967,102345968,102345976,102345978,102345986 %N A116670 Numbers with all but one decimal digit. %C A116670 More precisely, each term has exactly nine distinct decimal digits any of which may occur more than once. Leading zeros are not permitted. %H A116670 <a href="/index/Ar#10-automatic">Index entries for 10-automatic sequences</a>. %e A116670 a(1) = 102345678 as all decimal digits but 9 appear and there is no smaller number with only one missing digit. %t A116670 Select[Range[10^8, 10^8 + 3000000], Length[Union[IntegerDigits[#]]] == 9 &] (* _T. D. Noe_, Dec 05 2012 *) %Y A116670 Cf. A050278 (pandigital numbers). %K A116670 base,nonn,easy %O A116670 1,1 %A A116670 _Rick L. Shepherd_, Feb 22 2006 %E A116670 Offset corrected by _Charles R Greathouse IV_, Feb 15 2017