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A325625
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Sorted prime signature of 2^n - 1.
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7
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1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1
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OFFSET
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1,8
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COMMENTS
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The sorted prime signature of n is row n of A124010.
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LINKS
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EXAMPLE
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We have 2^126 - 1 = 3^3 * 7^2 * 19 * 43 * 73 * 127 * 337 * 5419 * 92737 * 649657 * 77158673929, so row n = 126 is {1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3}.
Triangle begins:
1
1
1
1 1
1
1 2
1
1 1 1
1 1
1 1 1
1 1
1 1 1 2
1
1 1 1
1 1 1
1 1 1 1
1
1 1 1 3
1
1 1 1 1 2
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MATHEMATICA
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Table[Sort[Last/@FactorInteger[2^n-1]], {n, 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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