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A182628
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Triangle T(n,k) read by rows in which row n lists the number of digits of the binary expansion of the divisors of n.
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2
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1, 1, 2, 1, 2, 1, 2, 3, 1, 3, 1, 2, 2, 3, 1, 3, 1, 2, 3, 4, 1, 2, 4, 1, 2, 3, 4, 1, 4, 1, 2, 2, 3, 3, 4, 1, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 5, 1, 5, 1, 2, 2, 3, 4, 5, 1, 5, 1, 2, 3, 3, 4, 5, 1, 2, 3, 5, 1, 2, 4, 5, 1, 5, 1, 2, 2
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internal format)
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OFFSET
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1,3
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COMMENTS
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Row n lists the number of digits of the numbers in the n-th row of triangle A182620.
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LINKS
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EXAMPLE
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Triangle begins:
1,
1, 2,
1, 2,
1, 2, 3,
1, 3,
1, 2, 2, 3,
1, 3,
1, 2, 3, 4,
1, 2, 4,
1, 2, 3, 4,
1, 4,
1, 2, 2, 3, 3, 4,
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MAPLE
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with(numtheory):for n from 1 to 12 do for d in divisors(n) do printf("%d, ", length(convert(convert(d, binary), string))); od:printf("\n"); od: # Nathaniel Johnston, Apr 19 2011
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CROSSREFS
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KEYWORD
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nonn,base,easy,tabf
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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