A228242 First occurrence of n consecutive n's in the decimal expansion of log(2).

4, 419, 2114, 3929, 38451, 716837, 6180096, 10680693, 2539803904

Offset

1,1

Comments

Earls sequence for log(2).

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Natural Logarithm of 2 Digits

Eric Weisstein's World of Mathematics, Earls Sequence

Example

log(2) = 0.6931471806...7229..., so
a(1) = 4 (the digit string 1 first occurs at position 4)
a(2) = 419 (the digit string 22 first occurs starting at position 419)

Crossrefs

Cf. A002162 (decimal expansion of log(2)).

Sequence in context: A326209 A287965 A215647 * A036771 A201980 A080321

Adjacent sequences: A228239 A228240 A228241 * A228243 A228244 A228245

Keyword

nonn,base

Author

Eric W. Weisstein, Aug 17 2013

Extensions

a(9) = 2539803904 from Eric W. Weisstein, Aug 20 2013

Status

approved