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 A136835 Numbers k such that k and k^2 use only the digits 0, 1, 2, 8 and 9. 1
 0, 1, 9, 10, 11, 90, 91, 99, 100, 101, 109, 110, 899, 900, 901, 910, 911, 990, 991, 999, 1000, 1001, 1009, 1010, 1011, 1090, 1091, 1100, 1101, 1109, 8989, 8990, 8999, 9000, 9001, 9010, 9011, 9100, 9101, 9110, 9900, 9901, 9909, 9910, 9990, 9991, 9999, 10000, 10001, 10009, 10010, 10011, 10090, 10091, 10099, 10100, 10109, 10110, 10900, 10910, 10991, 11000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Generated with DrScheme. LINKS Jonathan Wellons, Table of n, a(n) for n = 1..1240 J. Wellons, Tables of Shared Digits EXAMPLE 298180989^2 = 88911902201018121. MATHEMATICA odQ[n_]:=Module[{c=Union[IntegerDigits[n^2]]}, And@@Table[MemberQ[{0, 1, 2, 8, 9}, c[[i]]], {i, Length[c]}]]; Select[FromDigits/@Tuples[{ 0, 1, 2, 8, 9}, 5], odQ] (* Harvey P. Dale, Nov 24 2013 *) CROSSREFS Sequence in context: A048031 A048013 A048048 * A031166 A202706 A104627 Adjacent sequences: A136832 A136833 A136834 * A136836 A136837 A136838 KEYWORD base,nonn AUTHOR Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008 STATUS approved

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Last modified September 28 16:15 EDT 2023. Contains 365736 sequences. (Running on oeis4.)