A288659 - OEIS

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A288659

Numbers whose cubes have an odd number of digits.

0, 1, 2, 5, 6, 7, 8, 9, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

The sequence of cubes starts: 0, 1, 8, 125, 216, 343, 512, 729, 10648, 12167, 13824, ...

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..10000

Jeremy Gardiner, Middle digit in square numbers, Seqfan Mailing list, Dec 12 2016.

MATHEMATICA

Join[{0}, Select[Range[200], OddQ[IntegerLength[#^3]]&]] (* Harvey P. Dale, Oct 24 2017 *)

CROSSREFS

Cf. A288657, A288658, A288660.