A229714 - OEIS

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.

%I #8 Apr 28 2021 01:25:17

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

%N 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.

%C Column 4 of A229717.

%e Some solutions for n=4:

%e 8 12 14 12 12 14 12 11 13 13 15 13 15 16 18 10

%e 9 10 11 13 11 13 10 10 16 9 14 14 11 11 13 11

%e 12 12 10 12 13 14 9 9 14 7 15 16 10 8 9 12

%e 17 14 11 13 10 10 12 12 13 10 12 13 9 9 7 15

%K nonn,more

%O 1,2

%A _R. H. Hardin_, Sep 27 2013