Number of -7..7 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
A199703
Number of -7..7 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.
Terms
- a(0) =1a(1) =14a(2) =156a(3) =1940a(4) =24394a(5) =314532a(6) =4099204a(7) =53901956a(8) =713719390a(9) =9503449352a(10) =127119684220
External references
- oeis: A199703