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A229561
Number of arrays of length n that are sums of 3 consecutive elements of length n+2 permutations of 0..n+1.
0
1, 12, 96, 304, 4416, 38520, 302400, 3540672, 39595392, 461376000
OFFSET
1,2
COMMENTS
Column 3 of A229565.
EXAMPLE
Some solutions for n=3:
5 5 3 5 8 7 8 9 6 5 6 3 5 5 8 8
3 6 6 6 6 5 9 7 7 8 9 5 8 7 5 6
5 8 8 9 3 3 6 4 4 9 8 8 6 8 3 5
CROSSREFS
Cf. A229565.
Sequence in context: A059154 A204630 A192848 * A341233 A120658 A121627
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 26 2013
STATUS
approved