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 A052014 #25 Jun 16 2025 12:49:04 %S A052014 2,3,5,7,31,41,43,53,61,71,73,83,97,421,431,521,541,631,641,643,653, %T A052014 743,751,761,821,853,863,941,953,971,983,5431,6421,6521,7321,7541, %U A052014 7621,7643,8431,8521,8543,8641,8731,8741,8753,8761,9421,9431,9521,9631,9643 %N A052014 Primes with distinct digits in descending order. %C A052014 Last term is a(87) = 98765431. %H A052014 M. F. Hasler, <a href="/A052014/b052014.txt">Table of n, a(n) for n = 1..87</a>. [The full list of terms.] %p A052014 b:= proc(n) `if`(isprime(n), n, [][]), seq( %p A052014 b(parse(cat(n, j))), j=1..irem(n, 10)-1) %p A052014 end: %p A052014 sort([seq(b(n), n=1..9)])[]; # _Alois P. Heinz_, Jun 16 2025 %t A052014 Select[Prime[Range[1200]], Max[DigitCount[#]] == 1 && And@@Negative[ Differences[IntegerDigits[#]]]&] (* _Harvey P. Dale_, Oct 22 2011 *) %t A052014 t={}; Do[p=Prime[n]; If[Select[Differences[IntegerDigits[p]], # >= 0&] == {}, AppendTo[t,p]], {n,1195}]; t (* _Jayanta Basu_, May 04 2013 *) %o A052014 (PARI) A052014=[]; for( i=1,1023, c=-1; isprime( t=sum( j=0,9, if(bittest(i,j),j*10^c++))) & A052014=concat(A052014,t)); A052014=vecsort(A052014) %Y A052014 Cf. A000040, A028867, A028864, A052015. %K A052014 nonn,base,fini,full,easy %O A052014 1,1 %A A052014 _Patrick De Geest_, Nov 15 1999