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A119524 Decimal expansion of the van der Waerden-Ulam binary measure of the composites. 1
1, 7, 0, 6, 3, 4, 9, 8, 0, 2, 9, 7, 7, 7, 6, 6, 7, 9, 5, 0, 3, 7, 8, 0, 7, 5, 5, 6, 9, 1, 3, 8, 4, 5, 8, 3, 2, 6, 8, 4, 5, 1, 5, 2, 3, 7, 2, 4, 1, 6, 6, 0, 4, 4, 2, 6, 3, 5, 0, 9, 1, 7, 1, 0, 2, 2, 7, 1, 8, 0, 7, 8, 7, 6, 1, 2, 8, 5, 3, 3, 1, 6, 0, 7, 4, 1, 9, 9, 0, 3, 1, 4, 3, 0, 4, 8, 4, 4, 4, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Decimal expansion of Sum_{ k >= 1} (k - 1 - PrimePi[k])/2^k.

REFERENCES

S. M. Ulam, Problems in Modern Mathematics, John Wiley and Sons, New York, 1960, page 54

LINKS

Table of n, a(n) for n=0..99.

EXAMPLE

0.17063498029777667950378075569138458326845152372416604426350917102271807...

CROSSREFS

Sequence in context: A011479 A153871 A198934 * A260799 A021590 A094241

Adjacent sequences:  A119521 A119522 A119523 * A119525 A119526 A119527

KEYWORD

nonn,cons

AUTHOR

Roger L. Bagula, May 27 2006

EXTENSIONS

Edited and corrected by N. J. A. Sloane, Nov 17 2006

STATUS

approved

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Last modified July 13 15:18 EDT 2020. Contains 335688 sequences. (Running on oeis4.)