Number of length n+1 0..2 X 4 arrays with the sum of the absolute values of adjacent differences equal to n*4.
A249978
Number of length n+1 0..2 X 4 arrays with the sum of the absolute values of adjacent differences equal to n*4.
Terms
- a(0) =10a(1) =64a(2) =426a(3) =3030a(4) =22560a(5) =168506a(6) =1293326a(7) =9937894a(8) =77372824a(9) =604180880a(10) =4749038012a(11) =37448196486a(12) =296429721556
External references
- oeis: A249978