A011273 Decimal expansion of 19th root of 9.

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

Offset

1,3

Links

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

Prog

(Python)
from sympy import integer_nthroot
def A011273(n): return integer_nthroot(9*10**(19*(n-1)), 19)[0] % 10 # Chai Wah Wu, Mar 07 2022

Crossrefs

Sequence in context: A227527 A275504 A275401 * A274068 A274065 A233073

Adjacent sequences: A011270 A011271 A011272 * A011274 A011275 A011276

Keyword

nonn,cons

Author

N. J. A. Sloane.

Extensions

Last digit corrected by Ivan Panchenko, Sep 04 2014

Status

approved