This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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. 1
 311, 401, 613, 811, 1013, 1471, 1861, 2011, 4051, 4261, 4801, 4903, 6067, 8209, 8501, 9403, 9461, 10061, 10301, 11831, 13913, 14051, 19961, 20353, 20707, 22063, 25031, 25903, 27763, 31511, 36313, 37561, 43313, 43517, 49003, 49331, 49891, 51817 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS One and only one digit can change between any two successive primes in a run. Rearrangement is optionally permitted to arrive at next consecutive prime in run. Leading zeros are not permitted; all numbers in the run must have the same number of digits. LINKS EXAMPLE 311 is in the sequence because it begins a run of seven consecutive primes as required: 311 (1->3) 313 (3->7) 317 (7->3,swap 1&3) 331 (1->7) 337 (3->4) 347 (7->9) 349. 401 starts a run of nine: 401, 409, 419, 421, 431, 433, 439, 443, 449. Note that 409 and 419 are not included since they are not the start of the run. CROSSREFS Cf. A157885. Sequence in context: A046016 A142005 A059225 * A113155 A259221 A142626 Adjacent sequences:  A157714 A157715 A157716 * A157718 A157719 A157720 KEYWORD nonn,base AUTHOR Ki Punches, Mar 04 2009, Mar 06 2009 EXTENSIONS Edited by Ray Chandler, Mar 08 2009 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.