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Number of nondecreasing -4..4 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -4..4 vector equals n
0

%I #3 Jun 06 2013 07:17:28

%S 2,25,104,411,968,2689,5573,12301,22398,41891,71784,124195,196235,

%T 313967,479501,730157,1062596,1548604

%N Number of nondecreasing -4..4 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -4..4 vector equals n

%C Column 4 of A226422

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 06 2013