1689732

Appears in sequences

• Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=5A200549
• T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=41A200553
• Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second differences.at n=3A200558