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 A136948 Numbers k such that k and k^2 use only the digits 0, 4, 5, 6 and 7. 2
 0, 74, 76, 740, 760, 7400, 7600, 74000, 74476, 76000, 77766, 667574, 740000, 744760, 757666, 760000, 777660, 777666, 6675740, 7075076, 7400000, 7447600, 7576660, 7600000, 7776600, 7776660, 66757400, 67577766, 67607474, 70750760, 74000000, 74474476, 74476000, 74476574, 75765474, 75766600, 76000000, 77750074, 77766000, 77766600, 667574000 (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..306 J. Wellons, Tables of Shared Digits EXAMPLE 676577456545476^2 = 457757054705545465075656066576. CROSSREFS Sequence in context: A114969 A104421 A352382 * A137139 A095569 A305265 Adjacent sequences: A136945 A136946 A136947 * A136949 A136950 A136951 KEYWORD base,nonn AUTHOR Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008 STATUS approved

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Last modified March 2 20:20 EST 2024. Contains 370498 sequences. (Running on oeis4.)