51653

Appears in sequences

• Composite squarefree numbers n such that p(i)+8 divides n-8, where p(i) are the prime factors of n.at n=1A225718
• Composite squarefree numbers n such that p+d(n) divides n-d(n) for all prime factors p of n, where d(n) is the number of divisors of n.at n=1A228302
• Index of first occurrence of n appearing twice in succession in van Eck's sequence (A181391), or 0 if it never occurs.at n=37A308782