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A192697
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Number of 1X10 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 1 zero-sum 10-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations)
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1
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2, 10, 54, 223, 758, 2239, 5888, 14055, 30973, 64220, 125681, 234793, 421151, 728848, 1221122, 1990599, 3162071, 4910443, 7471318, 11154759, 16368766, 23649285, 33671936, 47306193, 65642371, 90041983, 122175046, 164141152, 218451247
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for 1X10 <= 2*4^2
.-3.-2.-1.-1.-1..1..1..2..2..2...-3.-2.-2..0..0..1..1..1..1..3
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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