102377

Appears in sequences

• Duplicate of A029561.at n=4A028893
• Quasi-Carmichael numbers to base 2: squarefree composites n such that prime p|n ==> p-2|n-2.at n=4A029561
• Number of 3X3 0..n matrices whose square is also a 0..n matrix.at n=8A213992