293017

Appears in sequences

• a(0)=a(1)=1, a(n)=a(n-2)+(n+1)*a(n-1).at n=8A058279
• Triangle read by rows: T(n,k) = (n-1)*T(n-1,k) + T(n-2,k), with T(n,n-1)=1, T(n,n-2)=n-2, for n >= 1, 0 <= k <= n-1.at n=46A228340