A244601 Position of first occurrence of n consecutive equal digits in the decimal expansion of e starting after the decimal point.

1, 31, 47, 723, 4992, 89296, 210482, 384340, 110702779, 419970418

Offset: 1

Author

Felix Fröhlich, Jul 01 2014

Keywords

• nonn
• base
• more

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.

Examples

			Decimal expansion of e:
2.|7|18281828459045235360287471352|66|24977572470936|999|59574966967627724..
		

Links

• e digit search engine

Crossrefs

Cf. A001113. Resulting repdigits are A244602.

Programs

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 *)

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