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A039624 Numbers n such that there are equal numbers of 0's and 1's in first n digits of binary representation of Pi. 8
4, 6, 8, 16, 30, 32, 6356, 6358, 6360, 6362, 6364, 6368, 6370, 6372, 6374, 6384, 6430, 6442, 6444, 6446, 6450, 6464, 6468, 6470, 6508, 6514, 6524, 6526, 6562, 6564, 6568, 6570, 6572, 6586, 6588, 6688, 6690, 6692, 6694, 6806, 6866, 6916, 6918, 6920, 6922 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Number of terms < 10^k: 3, 6, 6, 129, 599, 777, ..., . - Robert G. Wilson v, Apr 13 2009

Number of terms < 10^k (k = 7, 8, 9, 10): 1646, 1646, 45915, 147043. - Hans Havermann, Nov 25 2016

A039624 terms are the indices of zeros in A166006. - Hans Havermann, Nov 25 2016

LINKS

Robert G. Wilson v, Table of n, a(n) for n = 1..777

Hans Havermann, Table of n, a(n) for n = 1..147043

MATHEMATICA

pir = RealDigits[Pi, 2, 10^6][[1]]; fQ[n_] := Count[ Take[ pir, 2n], 1] == n; 2 Select[ Range@ 3461, fQ@# &] (* Robert G. Wilson v, Apr 13 2009 *)

CROSSREFS

Cf. A166006.

Sequence in context: A049421 A260314 A238269 * A083166 A185292 A022599

Adjacent sequences:  A039621 A039622 A039623 * A039625 A039626 A039627

KEYWORD

base,nonn

AUTHOR

Brian Galebach

EXTENSIONS

More terms from Alex Healy, Jun 22 2001

STATUS

approved

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Last modified April 28 12:25 EDT 2017. Contains 285575 sequences.