321127

Appears in sequences

• Composite squarefree numbers n such that p(i)+7 divides n-7, where p(i) are the prime factors of n.at n=24A225717
• Number of 2 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s.at n=16A297583