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A175813 Numbers n such that the first n decimal digits of Pi contain equal numbers of even and odd decimal digits. 0
84, 576, 578, 580, 582, 646, 654, 682, 684, 686, 688, 690, 692, 694, 696, 698, 700, 702, 706, 722, 736, 740, 742, 2406, 2408, 2414, 2416, 2430, 2432, 2438, 2440, 2502, 2504, 2506, 2512, 2514, 2516, 2518, 2522, 2524, 2540, 2542, 2546, 2548, 2756, 2758, 2762 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Is this sequence infinite?

LINKS

Table of n, a(n) for n=1..47.

EXAMPLE

84 is in the sequence because the first 84 digits of Pi = 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986 include 42 odd digits and 42 even digits.

MATHEMATICA

L= Rest@FoldList[ Plus, 0, (-1)^First@ RealDigits[Pi, 10, 3000]] ; Do[If [L[[n]]==0, Print[n]], {n, 3000}]

CROSSREFS

Cf. A175792.

Sequence in context: A233053 A220203 A008429 * A238523 A238518 A264654

Adjacent sequences:  A175810 A175811 A175812 * A175814 A175815 A175816

KEYWORD

nonn,base

AUTHOR

Michel Lagneau, Sep 09 2010

STATUS

approved

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Last modified July 26 17:37 EDT 2021. Contains 346294 sequences. (Running on oeis4.)