A011166 - OEIS

A011166

Decimal expansion of 5th root of 81.

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

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OFFSET

1,1

LINKS

Ivan Panchenko, Table of n, a(n) for n = 1..1000

Index entries for algebraic numbers, degree 5.

EXAMPLE

2.40822468528069204628550861419115432910035701858850723494678379847073773126....

MATHEMATICA

First[RealDigits[81^(1/5), 10, 100]] (* Paolo Xausa, Nov 29 2025 *)

PROG

(PARI) sqrtn(81, 5) \\ Charles R Greathouse IV, Aug 15 2026