Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.
A200549
Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.
Terms
- a(0) =52a(1) =446a(2) =3396a(3) =26850a(4) =211374a(5) =1689732a(6) =13587804a(7) =109957140a(8) =893510530a(9) =7288331916a(10) =59637096784a(11) =489325754576
External references
- oeis: A200549