A018143 Powers of fifth root of 10 rounded up.

1, 2, 3, 4, 7, 10, 16, 26, 40, 64, 100, 159, 252, 399, 631, 1000, 1585, 2512, 3982, 6310, 10000, 15849, 25119, 39811, 63096, 100000, 158490, 251189, 398108, 630958, 1000000, 1584894, 2511887, 3981072, 6309574

Offset

0,2

Links

Table of n, a(n) for n=0..34.

Mathematica

Ceiling[Surd[10, 5]^Range[0, 40]] (* Harvey P. Dale, Dec 30 2017 *)

Prog

(PARI) a(n) = sqrtnint(10^n-1, 5) + 1; \\ Michel Marcus, Jun 26 2024

Crossrefs

Cf. A018141, A018142.

Sequence in context: A293161 A235648 A051449 * A373783 A281839 A136570

Adjacent sequences: A018140 A018141 A018142 * A018144 A018145 A018146

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved