826987

Appears in sequences

• a(n) = a(n-1) + (n-2)*a(n-2) + a(n-3) starting a(0)=0, a(1)=a(2)=1.at n=14A121956
• Numbers n such that A001414(n) divides n+1 and A001414(n+1) divides n.at n=8A131484