Number of arrays of length n that are sums of 4 consecutive elements of length n+3 permutations of 0..n+2, and no two consecutive rises or falls in the latter permutation.
A229714
Number of arrays of length n that are sums of 4 consecutive elements of length n+3 permutations of 0..n+2, and no two consecutive rises or falls in the latter permutation.
Terms
- a(0) =1a(1) =18a(2) =76a(3) =436a(4) =1152a(5) =13520a(6) =85480a(7) =676984a(8) =4504872a(9) =43298784
External references
- oeis: A229714