[seqfan] how is A177018 defined?

[Richard Mathar]

I have problems understanding the (apparently simple)
http://oeis.org/classic/A177018
"Numbers n such that n+A067076+A001477 is odd prime"
Why are values occurring more than once?
Which indices (or index combinations) are missing in the definition?

If we use "Numbers n such that n+A067076(n)+A001477(n) is prime",
which is of course the same as 
"Numbers n such that 2n+A067076(n) is prime"
we get the very different
1,2,6,9,12,23,28,29,32,36,39,43,49,52,59,64,69,73,87,99,..

Lead by the examples I considered "Smallest k such that
k+A067076(n+1)+A001477(n) is an odd prime"
but this doesn't match either.

RJM