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 A137034 Numbers k such that k and k^2 use only the digits 1, 3, 5, 6 and 8. 1
 1, 6, 56, 81, 816, 1156, 1881, 3656, 8131, 8166, 36316, 81556, 116881, 188556, 581666, 813381, 1163566, 1168581, 1366881, 1888566, 5613656, 11555881, 11668381, 13551316, 18313556, 18353656, 36316156, 36556331, 56138816, 56156331, 58153816, 58168581, 115555881, 135318581, 135513316, 183353656, 368356666, 368535631, 558138566 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Generated with DrScheme. LINKS Jonathan Wellons, Table of n, a(n) for n = 1..185 J. Wellons, Tables of Shared Digits EXAMPLE 816588565653816^2 = 666816885556556563855555361856. MATHEMATICA With[{c={1, 3, 5, 6, 8}}, Table[Select[FromDigits/@Tuples[c, n], SubsetQ[ c, IntegerDigits[ #^2]]&], {n, 9}]]//Flatten (* Harvey P. Dale, Jul 21 2016 *) CROSSREFS Sequence in context: A137033 A045526 A164579 * A177059 A345473 A053127 Adjacent sequences: A137031 A137032 A137033 * A137035 A137036 A137037 KEYWORD base,nonn AUTHOR Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008 STATUS approved

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Last modified December 7 23:30 EST 2023. Contains 367662 sequences. (Running on oeis4.)