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 A288660 Numbers whose cubes have an even number of digits. 4
 3, 4, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence of cubes starts: 27, 64, 1000, 1331, 1728, 2197, 2744, 3375, 4096, 4913, 5832, ... 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. CROSSREFS Cf. A288657, A288658, A288659. Sequence in context: A226303 A117781 A075100 * A212440 A066861 A292564 Adjacent sequences:  A288657 A288658 A288659 * A288661 A288662 A288663 KEYWORD nonn,base,easy AUTHOR Lars Blomberg, Jun 13 2017 STATUS approved

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Last modified June 1 19:27 EDT 2020. Contains 334762 sequences. (Running on oeis4.)