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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A135219 a(n) = largest number with n+1 digits and without zero digits whose squares have maximal number of zero digits = A135215(n+1). 4 99, 949, 9798, 62498, 997998, 6244998 (list; graph; refs; listen; history; text; internal format) OFFSET 2,1 LINKS Table of n, a(n) for n=2..7. CROSSREFS Cf. A134843, A134844, A134845, A134846, A134847, A134848, A134849, A135215, A135216, A135217. Sequence in context: A185499 A061366 A177686 * A182672 A124113 A223157 Adjacent sequences: A135216 A135217 A135218 * A135220 A135221 A135222 KEYWORD nonn,base AUTHOR Artur Jasinski, Nov 23 2007 STATUS approved

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Last modified August 18 17:33 EDT 2024. Contains 375269 sequences. (Running on oeis4.)