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 A220076 #11 Aug 21 2021 22:22:43 %S A220076 102345,102346,102347,102348,102349,102354,102356,102357,102358, %T A220076 102359,102364,102365,102367,102368,102369,102374,102375,102376, %U A220076 102378,102379,102384,102385,102386,102387,102389,102394,102395,102396,102397,102398,102435,102436 %N A220076 Numbers with exactly six distinct base-10 digits. %C A220076 This is to A031969 as 6 is to 4. This is the 6th row of the array A(k,n) = n-th number in which the number of distinct base-10 digits is k. A031969 is the 4th row. A220063 is the 5th row. Pandigital numbers A050278 is the 10th row. The subsequence of primes begins: 102359, 102367, 102397, 102437. %t A220076 Select[Range[100000, 103000], Length[Union[IntegerDigits[#]]] == 6 &] (* _T. D. Noe_, Dec 04 2012 *) %Y A220076 Cf. A031969, A050278, A220063. %K A220076 nonn,base,easy %O A220076 1,1 %A A220076 _Jonathan Vos Post_, Dec 03 2012 %E A220076 Corrected by _T. D. Noe_, Dec 04 2012