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A244601 Position of first occurrence of n consecutive equal digits in the decimal expansion of e starting after the decimal point. 7
1, 31, 47, 723, 4992, 89296, 210482, 384340, 110702779, 419970418 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Position 31 is occupied by the first of two consecutive 6's. Position 47 is occupied by the first of three consecutive 9's. Position 723 is occupied by the first of four consecutive 8's.

LINKS

Table of n, a(n) for n=1..10.

e digit search engine

EXAMPLE

Decimal expansion of e:

2.|7|18281828459045235360287471352|66|24977572470936|999|59574966967627724..

MATHEMATICA

e = Rest[First[RealDigits[E, 10, 2000000]]];

A244601 = ConstantArray[0, 8];

For[i = 1, i <= Length[e], i++,

  t = e[[i]]; c = 1;

  While[e[[i + c]] == t, c++];

  If[A244601[[c]] == 0, A244601[[c]] = i;  i = i + c - 1; Continue[]]

]; A244601 (* Robert Price, Sep 07 2019 *)

CROSSREFS

Cf. A001113. Resulting repdigits are A244602.

Sequence in context: A127576 A139896 A289839 * A004224 A194129 A288291

Adjacent sequences:  A244598 A244599 A244600 * A244602 A244603 A244604

KEYWORD

nonn,base,more

AUTHOR

Felix Fröhlich, Jul 01 2014

EXTENSIONS

a(5)-(8) from Jens Kruse Andersen, Jul 20 2014

a(9)-(10) from Felix Fröhlich, Aug 26 2014

Prepended a(1), Felix Fröhlich, Aug 31 2014

STATUS

approved

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Last modified September 27 10:28 EDT 2021. Contains 347689 sequences. (Running on oeis4.)