A136820 Numbers k such that k and k^2 use only the digits 0, 1, 2, 4 and 8.

0, 1, 2, 10, 11, 12, 20, 21, 22, 100, 101, 102, 110, 120, 122, 200, 201, 202, 210, 220, 221, 1000, 1001, 1002, 1010, 1011, 1012, 1020, 1021, 1022, 1100, 1101, 1102, 1200, 1201, 1202, 1220, 1422, 1488, 2000, 2001, 2002, 2010, 2011, 2012, 2020, 2021, 2022, 2100, 2101, 2102, 2200, 2201, 2202, 2210, 2848, 4488, 10000, 10001, 10002, 10010, 10011, 10012, 10020

Offset: 1

Author

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

Keywords

• base
• nonn

Comments

Generated with DrScheme.

Examples

			20284201^2 = 411448810208401.
		

Links

• Jonathan Wellons, Table of n, a(n) for n = 1..1047
• J. Wellons, Tables of Shared Digits [archived]