Number of arrays of length 4 that are sums of n consecutive elements of length 4+n-1 permutations of 0..4+n-2, and no two consecutive rises or falls in the latter permutation.
A229720
Number of arrays of length 4 that are sums of n consecutive elements of length 4+n-1 permutations of 0..4+n-2, and no two consecutive rises or falls in the latter permutation.
Terms
- a(0) =10a(1) =32a(2) =82a(3) =436a(4) =1906a(5) =4564a(6) =13232a(7) =18336a(8) =43654a(9) =50284
External references
- oeis: A229720