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09 April 2013

A224502: Prime numbers (together with one) whose representation in balanced ternary are palindromes.

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 example:
For n=5, a(5)=61 and in balanced ternary notation is 1ī1ī1.
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