Playing with prime numbers

prime triplet

/home/egi/egison3% egison                                                                                                                                                               [130]
Egison Version 3.0.8 (C) 2011-2013 Satoshi Egi
http://egison.pira.jp
Welcome to Egison Interpreter!
> (take 5 (match-all primes (list integer) [<join _ <cons $n <cons ,(+ n 2) <cons ,(+ n 6) _>>>> [n (+ n 2) (+ n 6)]]))
{[5 7 11] [11 13 17] [17 19 23] [41 43 47] [101 103 107]}
> (take 5 (match-all primes (list integer) [<join _ <cons $n <cons ,(+ n 4) <cons ,(+ n 6) _>>>> [n (+ n 2) (+ n 6)]]))
{[7 9 13] [13 15 19] [37 39 43] [67 69 73] [97 99 103]}
> 
Leaving Egison Interpreter.