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 A136905 Numbers k such that k and k^2 use only the digits 0, 2, 4, 6 and 9. 1
 0, 2, 20, 64, 200, 264, 492, 640, 964, 2000, 2064, 2640, 4902, 4920, 4992, 6400, 9640, 20000, 20602, 20640, 20992, 24992, 26400, 49020, 49200, 49902, 49920, 49992, 64000, 96400, 200000, 206020, 206400, 209920, 209992, 222402, 246962, 249920, 249992, 264000, 490200, 492000, 494262, 494462, 494662, 499002, 499020, 499200, 499902, 499920, 499992 (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..1278 J. Wellons, Tables of Shared Digits EXAMPLE 49642929029462^2 = 2464420402624200949264009444. MATHEMATICA With[{c={0, 2, 4, 6, 9}}, Select[FromDigits/@Tuples[c, 6], SubsetQ[ c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Sep 21 2017 *) CROSSREFS Sequence in context: A133217 A001504 A192351 * A230644 A183907 A216609 Adjacent sequences: A136902 A136903 A136904 * A136906 A136907 A136908 KEYWORD base,nonn AUTHOR Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008 STATUS approved

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Last modified March 22 01:15 EDT 2023. Contains 361413 sequences. (Running on oeis4.)