A008571 Digits of powers of 11.

1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 6, 4, 1, 1, 6, 1, 0, 5, 1, 1, 7, 7, 1, 5, 6, 1, 1, 9, 4, 8, 7, 1, 7, 1, 2, 1, 4, 3, 5, 8, 8, 8, 1, 2, 3, 5, 7, 9, 4, 7, 6, 9, 1, 2, 5, 9, 3, 7, 4, 2, 4, 6, 0, 1, 2, 8, 5, 3, 1, 1, 6, 7, 0, 6, 1, 1, 3, 1, 3, 8, 4, 2, 8, 3, 7, 6, 7, 2, 1, 3, 4, 5, 2, 2, 7, 1, 2

Offset

0,5

Comments

The constant whose decimal expansion is this sequence is irrational (Mahler, 1981). - Amiram Eldar, Mar 23 2025

Links

Seiichi Manyama, Rows n = 0..100, flattened

Kurt Mahler, On some irrational decimal fractions, Journal of Number Theory, Vol. 13, No. 2 (1981), pp. 268-269.

Example

Triangle begins:
  1;
  1, 1;
  1, 2, 1;
  1, 3, 3, 1;
  1, 4, 6, 4, 1;
  1, 6, 1, 0, 5, 1;
  1, 7, 7, 1, 5, 6, 1;
  1, 9, 4, 8, 7, 1, 7, 1;
  2, 1, 4, 3, 5, 8, 8, 8, 1;
  ...

Mathematica

IntegerDigits[11^Range[0, 20]]//Flatten (* Harvey P. Dale, Aug 26 2025 *)

Crossrefs

Cf. A001020, A348553.

Cf. A000455, A008564, A008565, A008566, A008567, A008568, A008569, A008570, A008572, A008573, A010054.

Sequence in context: A162424 A302998 A303484 * A230860 A051137 A183328

Adjacent sequences: A008568 A008569 A008570 * A008572 A008573 A008574

Keyword

nonn,base,easy,tabf

Author

N. J. A. Sloane

Status

approved