917762

Appears in sequences

• Number of length n arrays x(i), i=1..n with x(i) in 0..i and no value appearing more than 2 times.at n=9A248836
• T(n,k)=Number of length n arrays x(i), i=1..n with x(i) in 0..i and no value appearing more than k times.at n=53A248842