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 A053736 #8 Mar 31 2012 10:32:39 %S A053736 53,431,233,347,743,1471,1741,7411,1571,5171,5711,7151,1367,1637,3167, %T A053736 3617,3671,3761,6173,6317,1249,1429,4129,4219,9241,9421,1237,1327, %U A053736 1723,2137,2371,2713,2731,3217,3271,7213,7321,5399,5939,9539 %N A053736 Run through primes p; if the digits of p*q (where q is the prime following p) can be rearranged to form one or more primes r, append these primes r to the sequence. %C A053736 Leading zeros are not allowed in the rearranged number. %D A053736 C. A. Pickover, "Vampire numbers," chapter 30 of Keys to Infinity. NY: Wiley, 1995. Pages 227-231 %e A053736 7*11=77, but no prime rearrangements are possible; 11*13 is 143, whose digits can be rearranged to 431, a prime. %Y A053736 A053652 gives the entries sorted and with duplicates removed. Cf. A014575, A053652. %K A053736 easy,nonn,base %O A053736 1,1 %A A053736 _Enoch Haga_, Feb 13 2000 %E A053736 Corrected and extended by _Jens Kruse Andersen_, Dec 01 2006