A119524 Decimal expansion of the van der Waerden-Ulam binary measure of the composites.

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

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: A153871 A365350 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