A136945 Numbers k such that k and k^2 use only the digits 0, 3, 6, 8 and 9.

0, 3, 6, 30, 60, 63, 83, 300, 306, 600, 603, 630, 830, 833, 836, 3000, 3006, 3060, 6000, 6003, 6030, 6300, 8300, 8303, 8306, 8330, 8360, 9386, 9803, 30000, 30006, 30060, 30600, 30633, 60000, 60003, 60030, 60083, 60300, 63000, 83000, 83006, 83030, 83060, 83300, 83303, 83306, 83600, 89906, 93860, 96886, 98030, 98336, 99803, 300000, 300006, 300060, 300600

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1238

J. Wellons, Tables of Shared Digits

Example

8308960830386^2 = 69038830080888806660908996.

Mathematica

With[{c={0, 3, 6, 8, 9}}, Select[FromDigits/@Tuples[c, 6], SubsetQ[c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Apr 19 2015 *)

Crossrefs

Sequence in context: A140814 A343433 A136932 * A260906 A136894 A136939

Adjacent sequences: A136942 A136943 A136944 * A136946 A136947 A136948

Keyword

base,nonn

Author

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

Status

approved