C program for generating loophole series

C PROGRAM TO GENERATE THE FOLLOWING SERIES CALLED LOOPHOLE SERIES:-
3,5,53,13,19,7,19,13,53,5,3
How do i do it?
Can somebody explain what is Loophole series and its applications?

Well these are all prime numbers, other than that I cannot discern any mathematical series.

true. and ofcourse its palindrome