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.

1, 18, 76, 436, 1152, 13520, 85480, 676984, 4504872, 43298784

Offset

1,2

Comments

Column 4 of A229717.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4:
   8 12 14 12 12 14 12 11 13 13 15 13 15 16 18 10
   9 10 11 13 11 13 10 10 16  9 14 14 11 11 13 11
  12 12 10 12 13 14  9  9 14  7 15 16 10  8  9 12
  17 14 11 13 10 10 12 12 13 10 12 13  9  9  7 15

Crossrefs

Sequence in context: A262402 A296363 A164603 * A100187 A197886 A039453

Adjacent sequences: A229711 A229712 A229713 * A229715 A229716 A229717

Keyword

nonn,more

Author

R. H. Hardin, Sep 27 2013

Status

approved