A011440 Decimal expansion of 21st root of 21.

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

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• cons

Links

• Ivan Panchenko, Table of n, a(n) for n = 1..1000
• Sequences related to the decimal expansion of the n-th root of x, OEIS Index, Aug. 2017

Crossrefs

Cf. A011200 ... A011439 (n-th root of x = 5..20, with n = 6..20), A011441 ... A011519 (n-th root of n = 22, ..., 100).

Programs

Mathematica

RealDigits[Surd[21,21],10,120][[1]] (* Harvey P. Dale, Mar 14 2013 *)

PARI

sqrtn(21,21) \\ M. F. Hasler, Aug 26 2017