A201493 - OEIS

A201493

Number of nX5 zero-sum -2..2 arrays with rows and columns lexicographically nondecreasing

12, 7815, 7798656, 6697376240, 4585552158911, 2571822263246639, 1219998885223727883, 501770963443215883902, 182271590618268117246577, 59312881704712898493358018, 17484065266324835514539288191

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OFFSET

1,1

COMMENTS

Column 5 of A201496

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=2

.-1..0..0..1..1...-1.-1.-1..0..2...-2.-1..1..1..1...-2.-1..0..0..1

..0..0..2.-2.-1...-1..0..0..0..2...-1.-1.-2..2..2....2.-1.-1..0..2

CROSSREFS

Sequence in context: A333674 A308130 A107251 * A009173 A012531 A013481

Adjacent sequences: A201490 A201491 A201492 * A201494 A201495 A201496

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 02 2011

STATUS

approved