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A167490 a(n) = Smallest number with binary run length product = n 2
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; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(p) = 2^p - 1 for prime p
LINKS
EXAMPLE
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.
CROSSREFS
Cf. A167489 - Product of run length in binary representation of n
Cf. A167491 - Numbers in this sequence sorted in ascending order
Sequence in context: A193297 A240738 A047068 * A081533 A096856 A347862
KEYWORD
nonn
AUTHOR
Andrew Weimholt, Nov 05 2009
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)