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Number of nondecreasing -6..6 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -6..6 vector equals n
0

%I #3 Jun 06 2013 07:18:12

%S 2,47,275,1415,4932,17203,44256,118669,275619,628149,1305850,2677789,

%T 5057899,9510519,17126490,30158971,51409213,86308875

%N Number of nondecreasing -6..6 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -6..6 vector equals n

%C Column 6 of A226422

%e Some solutions for n=3

%e .-5...-5...-4...-3...-3...-4...-2...-6...-6...-2...-6...-5...-3...-6...-2...-5

%e ..4....3...-1...-2....1...-3....3...-1....2...-1....4...-4....3...-1....4...-3

%e ..5....3...-1....2....2...-3....4....2....5....1....5....3....3....0....5...-1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 06 2013