The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com
A160513
Positive squarefree integers n such that, if n is the m-th squarefree integer (i.e. the m-th term of A005117), then n is also the m-th term of A000961 (the prime powers).