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A184446
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Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i)^2 equal to n*49
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1
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5, 31, 130, 368, 915, 1993, 3818, 6805, 11052, 18352, 28860, 39870, 61568, 88347, 109115, 159804, 215574, 266628, 362832, 445236, 541934, 738893, 903565, 1011760, 1295590, 1650305, 1800585, 2280782, 2748502, 2923138, 3779009, 4358050, 4724361
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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 n=5
..3....1....1....2....1....2....1....1....0....2....2....3....1....3....4....2
..1....2....0....1....5....1....4....1....1....0....0....1....5....3....2....3
..3....4....0....1....0....2....3....1....5....2....3....5....2....1....4....2
..3....5....5....2....2....5....4....5....2....2....5....0....5....4....2....0
..1....1....1....0....1....1....3....3....0....4....2....2....1....2....4....1
..4....1....1....5....4....2....1....2....3....0....2....1....0....3....0....2
..0....1....3....0....1....2....0....0....2....3....0....3....1....1....1....4
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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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