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A216632
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Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 4th powers equal to sum(i^4,i=0..n-1)
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0
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1, 1, 1, 1, 1, 1, 2, 3, 6, 12, 24, 63, 164, 424, 1163, 2919, 8289, 24060, 70704, 212130, 672520, 2080293, 6485878, 20449084
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OFFSET
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1,7
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COMMENTS
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LINKS
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EXAMPLE
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All solutions for n=9
..1....0....0....0....0....0
..4....0....1....1....0....0
..4....1....2....3....1....3
..4....3....3....3....2....3
..4....6....4....5....4....3
..5....6....5....6....6....3
..5....6....6....6....7....4
..7....7....7....6....7....8
..8....7....8....8....7....8
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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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