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 A201492 Number of n X 4 zero-sum -2..2 arrays with rows and columns lexicographically nondecreasing. 1
 8, 1454, 301432, 50432052, 6697376240, 732383803600, 68110029402413, 5516712973977104, 396137884984421823, 25563298281912009949, 1498543207391775400633, 80501743778622446236710 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A201496. LINKS R. H. Hardin, Table of n, a(n) for n = 1..27 EXAMPLE Some solutions for n=2 .-2..0..0..2...-2.-1..2..2...-2.-1..0..2...-1.-1..1..1...-2.-1..0..1 .-1..0..0..1...-2..1.-2..2....1..1..1.-2....1..1.-2..0....0..1.-1..2 CROSSREFS Cf. A201496. Sequence in context: A282889 A225068 A270145 * A172938 A252176 A252763 Adjacent sequences: A201489 A201490 A201491 * A201493 A201494 A201495 KEYWORD nonn AUTHOR R. H. Hardin, Dec 02 2011 STATUS approved

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Last modified August 3 13:10 EDT 2024. Contains 374893 sequences. (Running on oeis4.)