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A127200
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Numerator of n-th partial sum of the Van der Waerden-Ulam binary measure of the primes.
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1
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1, 1, 5, 23, 49, 51, 13, 105, 211, 1693, 3391, 1697, 6791, 13585, 27173, 108699, 217405, 217409, 217411, 54353, 434825, 6957209, 13914427, 27828863, 55657735, 111315479, 222630967, 55657743, 445261949, 1781047807, 3562095625
(list; graph; refs; listen; history; internal format)
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OFFSET
| 2,3
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MATHEMATICA
| Table[Numerator[Sum[PrimePi[k]/2^k, {k, 2, x}]], {x, 2, 100}] (*Artur Jasinski*)
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CROSSREFS
| Cf. A119523, A127197, A127201.
Sequence in context: A031387 A057622 A055626 * A147113 A135771 A140811
Adjacent sequences: A127197 A127198 A127199 * A127201 A127202 A127203
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KEYWORD
| nonn,frac
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Jan 08 2007
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