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A244602 First repdigit number with n digits occurring in the decimal expansion of e, starting after the decimal point. 6
7, 66, 999, 8888, 66666, 0, 5555555, 99999999, 111111111, 1111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A244601 allows consecutive 0's and says "Resulting repdigits are A244602", so 000000 = 0 is apparently allowed here as a repdigit with 6 digits. Otherwise a(6) would be 555555 at position 210482 (which extends to a seventh 5). - Jens Kruse Andersen, Jul 20 2014

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]]];

A244602 = ConstantArray[0, 8];

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

t = e[[i]]; c = 1;

While[e[[i + c]] == t, c++];

If[A244602[[c]] == 0,

  A244602[[c]] = FromDigits[ConstantArray[t, c]]; i = i + c - 1;

  Continue[]]

]; A244602 (* Robert Price, Sep 07 2019 *)

CROSSREFS

Cf. A010785, A244601.

Sequence in context: A024395 A215077 A003286 * A223889 A197744 A052351

Adjacent sequences:  A244599 A244600 A244601 * A244603 A244604 A244605

KEYWORD

nonn,base,more

AUTHOR

Felix Fröhlich, Jul 01 2014

EXTENSIONS

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

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

a(1) prepended by Alois P. Heinz, Aug 26 2014

STATUS

approved

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Last modified March 29 05:19 EDT 2020. Contains 333105 sequences. (Running on oeis4.)