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 A157717 #7 Jul 22 2014 22:08:57 %S A157717 311,401,613,811,1013,1471,1861,2011,4051,4261,4801,4903,6067,8209, %T A157717 8501,9403,9461,10061,10301,11831,13913,14051,19961,20353,20707,22063, %U A157717 25031,25903,27763,31511,36313,37561,43313,43517,49003,49331,49891,51817 %N A157717 Primes that start a run of at least seven consecutive primes, where between successive primes exactly one digit changes and the resulting digits may be permuted. %C A157717 One and only one digit can change between any two successive primes in a run. %C A157717 Rearrangement is optionally permitted to arrive at next consecutive prime in run. %C A157717 Leading zeros are not permitted; all numbers in the run must have the same number of digits. %e A157717 311 is in the sequence because it begins a run of seven consecutive primes as required: %e A157717 311 (1->3) 313 (3->7) 317 (7->3,swap 1&3) 331 (1->7) 337 (3->4) 347 (7->9) 349. %e A157717 401 starts a run of nine: 401, 409, 419, 421, 431, 433, 439, 443, 449. %e A157717 Note that 409 and 419 are not included since they are not the start of the run. %Y A157717 Cf. A157885. %K A157717 nonn,base %O A157717 1,1 %A A157717 _Ki Punches_, Mar 04 2009, Mar 06 2009 %E A157717 Edited by _Ray Chandler_, Mar 08 2009