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A358106
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Quotient of the n-th divisible pair, where pairs are ordered first by sum and then by denominator.
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6
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1, 2, 3, 1, 4, 5, 2, 1, 6, 7, 3, 1, 8, 2, 9, 4, 1, 10, 11, 5, 3, 2, 1, 12, 13, 6, 1, 14, 4, 2, 15, 7, 3, 1, 16, 17, 8, 5, 2, 1, 18, 19, 9, 4, 3, 1, 20, 6, 2, 21, 10, 1, 22, 23, 11, 7, 5, 3, 2, 1, 24, 4, 25, 12, 1, 26, 8, 2, 27, 13, 6, 3, 1, 28, 29, 14, 9, 5, 4, 2, 1
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OFFSET
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2,2
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LINKS
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FORMULA
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EXAMPLE
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Grouping by sum gives:
2: 1
3: 2
4: 3 1
5: 4
6: 5 2 1
7: 6
8: 7 3 1
9: 8 2
10: 9 4 1
11: 10
12: 11 5 3 2 1
13: 12
14: 13 6 1
15: 14 4 2
16: 15 7 3 1
17: 16
18: 17 8 5 2 1
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MATHEMATICA
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Table[Divide@@@Select[IntegerPartitions[n, {2}], Divisible@@#&], {n, 2, 30}]
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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