A160228 Write Pi-3 in binary and report the number of zeros in the first 10^n decimal places.

8, 60, 512, 5015, 49923, 500279, 4997393, 49999921

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Formula

A160228(n)+A160229(n)=A011557(n) for n=1...

Mathematica

f[n_] := Count[ RealDigits[Pi - 3, 2, 10^n - 2][[1]], 0] + 2; Do[ Print[{n, f@n}], {n, 8}]

Crossrefs

Cf. A004601, A011557, A160229.

Sequence in context: A129331 A369146 A005990 * A274746 A366216 A317774

Adjacent sequences: A160225 A160226 A160227 * A160229 A160230 A160231

Keyword

base,nonn

Author

Robert G. Wilson v, May 04 2009

Extensions

Edited by Charles R Greathouse IV, Mar 23 2010

Status

approved