The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A137027 Numbers k such that k and k^2 use only the digits 1, 3, 4, 6 and 9. 1
 1, 3, 4, 6, 13, 14, 19, 31, 44, 63, 119, 369, 643, 1146, 1414, 1914, 3114, 3364, 4119, 6414, 6646, 11914, 11963, 14119, 31131, 31614, 34196, 36694, 44313, 64313, 64414, 141313, 191414, 311343, 316143, 336696, 363196, 366946, 411636, 411694, 641414, 969119, 1196646, 1414194, 1913469, 3334114, 3363646, 3649196, 3666969, 3693196, 4434114 (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..520 J. Wellons, Tables of Shared Digits EXAMPLE 641431341949136^2 = 411434166434669436443611146496. MATHEMATICA sdQ[n_]:=Module[{idn2=Union[IntegerDigits[n^2]]}, And@@Table[ MemberQ[ {1, 3, 4, 6, 9}, idn2[[i]]], {i, Length[idn2]}]]; Flatten[ Table[ Select[ FromDigits/@Tuples[{1, 3, 4, 6, 9}, d], sdQ], {d, 7}]] (* Harvey P. Dale, Jun 10 2013 *) CROSSREFS Sequence in context: A061080 A254049 A280289 * A244409 A102733 A032712 Adjacent sequences:  A137024 A137025 A137026 * A137028 A137029 A137030 KEYWORD base,nonn AUTHOR Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 25 00:44 EST 2022. Contains 350565 sequences. (Running on oeis4.)