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 A134336 #20 Dec 12 2023 15:58:17
%S A134336 0,1,2,3,4,5,6,7,8,9,10,11,12,21,22,23,32,33,34,43,44,45,54,55,56,65,
%T A134336 66,67,76,77,78,87,88,89,98,99,100,101,102,110,111,112,120,121,122,
%U A134336 123,132,201,210,211,212,213,221,222,223,231,232,233,234,243,312,321,322,323
%N A134336 Nonnegative integers n containing each digit between n's smallest and largest decimal digits.
%C A134336 A032981 is a subsequence; the term 102 is the first positive integer not also in A032981. A171102 (pandigital numbers) and A033075 are subsequences. Union of A010785 (repdigits) and A108965.
%C A134336 a(n) = A178403(n) for n < 48. - _Reinhard Zumkeller_, May 27 2010
%C A134336 Equivalently, numbers with the property that the set of its decimal digits is a set of consecutive numbers. - _Tanya Khovanova_ and _Charles R Greathouse IV_, Jul 31 2012
%H A134336 Michael S. Branicky, <a href="/A134336/b134336.txt">Table of n, a(n) for n = 1..10000</a>
%F A134336 a(n) ~ n. - _Charles R Greathouse IV_, Sep 09 2011
%o A134336 (PARI) is(n)=my(v=vecsort(eval(Vec(Str(n))),,8));for(i=2,#v,if(v[i]!=1+v[i-1],return(0)));1 \\ _Tanya Khovanova_ and _Charles R Greathouse IV_, Jul 31 2012
%o A134336 (PARI) is_A134336(n)={vecmax(n=Set(digits(n)))-vecmin(n)==#n-1} \\ _M. F. Hasler_, Dec 24 2014
%o A134336 (Python)
%o A134336 def ok(n): d = sorted(set(map(int, str(n)))); return d[-1]-d[0]+1 == len(d)
%o A134336 print([k for k in range(324) if ok(k)]) # _Michael S. Branicky_, Dec 12 2023
%Y A134336 Cf. A032981, A050278, A033075 (a subsequence), A010785, A108965.
%K A134336 base,easy,nonn
%O A134336 1,3
%A A134336 _Rick L. Shepherd_, Oct 21 2007
%E A134336 Edited by _N. J. A. Sloane_, Aug 06 2012