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Search: id:A167490
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| A167490 |
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a(n) = Smallest number with binary run length product = n |
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+0
3
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| 0, 3, 7, 12, 31, 24, 127, 48, 56, 96, 2047, 99, 8191, 384, 224, 195, 131071, 199, 524287, 387, 896, 6144, 8388607, 391, 992, 24576, 455, 1539, 536870911, 775
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(p) = 2^p - 1 for prime p
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EXAMPLE
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a(4) = 12, because 12 is the smallest number with a binary run length product of 4.
12 decimal = 1100 binary. Run lengths in binary are 2,2, and 2x2 = 4.
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CROSSREFS
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Cf. A167489 - Product of run length in binary representation of n
Cf. A167491 - Numbers in this sequence sorted in ascending order
Sequence in context: A063072 A007626 A047068 this_sequence A081533 A096856 A108154
Adjacent sequences: A167487 A167488 A167489 this_sequence A167491 A167492 A167493
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KEYWORD
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nonn
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AUTHOR
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Andrew Weimholt (andrew(AT)weimholt.com), Nov 05 2009
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