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

1,3

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1047

J. Wellons, Tables of Shared Digits [archived]

Example

20284201^2 = 411448810208401.

Crossrefs

Sequence in context: A158304 A007089 A159952 * A256437 A136810 A136821

Adjacent sequences: A136817 A136818 A136819 * A136821 A136822 A136823

Keyword

base,nonn,changed

Author

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

Status

approved