Who is 80.101.45.83 (XS4ALL, The Hague)? You sent 4 million queries in July, 1.4 queries/sec, all month long, using Python, mostly pointless, and they still continue. - Neil Sloane, njasloane@gmail.com
A069042
Numbers n such that the n-th Euler number (A000364) == 1 (mod n)^2.