Finding all primes from 1 to n
bool [ ] prime = new bool [ n + 1 ] ; sieve ( n , prime ) ; Console . WriteLine ( " The ▁ prime ▁ triplets ▁ " + " from ▁ 1 ▁ to ▁ " + n + " ▁ are ▁ : " ) ; for ( int i = 2 ; i <= n - 6 ; ++ i ) {