290909

Appears in sequences

• Number of length n+2 0..6 arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.at n=4A250559
• T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.at n=49A250561
• Number of length 5+2 0..n arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.at n=5A250564