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 A109177 #7 Dec 05 2013 14:34:16 %S A109177 10235647,10236547,10243567,10243657,10245637,10247563,10254367, %T A109177 10254763,10256347,10256473,10257463,10264357,10264537,10346257, %U A109177 10356427,10364527,10425367,10425637,10425673,10426357,10426753 %N A109177 Eight-digit primes which use each of 0-to-7 decimal digits exactly once. %C A109177 There are exactly 2668 eight-digit primes using digits 0-to-7 exactly once: here the smallest ones are given; cf. A109178 with the largest ones. %H A109177 Harvey P. Dale, <a href="/A109177/b109177.txt">Table of n, a(n) for n = 1..2668</a> %t A109177 Take[FromDigits/@Select[Permutations[Range[0,7]],First[#]!=0&&PrimeQ[ FromDigits[ #]]&],50] (* _Harvey P. Dale_, Aug 16 2011 *) %Y A109177 Cf. A109178. %K A109177 base,nonn %O A109177 1,1 %A A109177 _Zak Seidov_, Jun 21 2005