A136894 Numbers k such that k and k^2 use only the digits 0, 2, 3, 6 and 9.

0, 3, 6, 30, 60, 63, 300, 306, 600, 603, 630, 3000, 3006, 3060, 6000, 6003, 6030, 6300, 26323, 30000, 30006, 30060, 30600, 60000, 60003, 60030, 60300, 63000, 263230, 263323, 300000, 300006, 300060, 300600, 306000, 600000, 600003, 600030, 600300, 603000, 630000, 2632300, 2633230, 3000000, 3000006, 3000060, 3000600, 3006000, 3060000, 6000000

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..688

J. Wellons, Tables of Shared Digits [archived]

Example

962309393939236^2 = 926039369663699699969660263696.

Mathematica

With[{c={0, 2, 3, 6, 9}}, Select[FromDigits/@Tuples[c, 7], SubsetQ[c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Nov 22 2019 *)

Crossrefs

Sequence in context: A136932 A136945 A260906 * A136939 A136944 A136946

Adjacent sequences: A136891 A136892 A136893 * A136895 A136896 A136897

Keyword

base,nonn

Author

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

Status

approved