212784

Appears in sequences

• Maximal length of chain-addition sequence mod 10 with window of size n.at n=9A181190
• Indices where A351101(n) = 1.at n=6A351278
• Period of the Fibonacci n-step sequence mod n.at n=9A351657
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,k) * binomial(n-1,n-3*k).at n=13A389328