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

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.

Sequence in context: A212441 A182783 A084852 * A228374 A092206 A374115

Adjacent sequences: A288656 A288657 A288658 * A288660 A288661 A288662

Keyword

nonn,base,easy

Author

Lars Blomberg, Jun 13 2017

Status

approved