http://www.martincwiner.com/wp-content/uploads/2009/11/primeconstellations.pdf
A longstanding hobby of mine is the pursuit of the twin prime conjecture. That is: are there infinitely many primes which are two apart? My main work can be found at:
http://rankyouragent.com/primes/primes.htm
A summary can be found at:
http://www.rankyouragent.com/primes/primes_simple.htm
And a nice summary of the counting functions for prime constellations (twins, triplets, quadruplets, etc) between a given prime and its square can be found at: