A137073 Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 9.

2, 3, 6, 63, 264, 632, 964, 2236, 4932, 4942, 4943, 22236, 22292, 26394, 26443, 49332, 49342, 49423, 49693, 49694, 62963, 66292, 66332, 222923, 494236, 494262, 494392, 494462, 496632, 499332, 499342, 499392, 499423, 499432, 626394, 996693, 996962, 2224694, 2496643, 2632343, 2632344, 2639364, 4946662, 4993332, 4993923, 4994236

Offset

1,1

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..644

J. Wellons, Tables of Shared Digits [archived]

Example

969362934942323^2 = 939664499639994332999336636329.

Mathematica

With[{c={2, 3, 4, 6, 9}}, Table[Select[FromDigits/@Tuples[c, n], SubsetQ[c, IntegerDigits[ #^2]]&], {n, 7}]]//Flatten (* Harvey P. Dale, May 15 2017 *)

Crossrefs

Sequence in context: A018409 A226933 A018415 * A018434 A124649 A018448

Adjacent sequences: A137070 A137071 A137072 * A137074 A137075 A137076

Keyword

base,nonn

Author

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

Status

approved