Quite often when I am doing prime number research and/or looking for patterns, I check the various number sequences against OEIS to see what other algorithms would come up with the same sequence. Usually, every sequence I look for is in there. For example:
A005408 - Odd Numbers
A000010 - Totients
A007318 - Pascal's Triange
And, now that I have published my first sequence to OEIS:
A224502 - Prime numbers that are Palindromes in Balanced Ternary Notation
For n=5, a(5)=61 and in balanced ternary notation is 1ī1ī1.