A136891 Numbers k such that k and k^2 use only the digits 0, 2, 3, 5 and 9.

0, 3, 5, 23, 30, 50, 55, 95, 230, 235, 300, 305, 500, 503, 505, 550, 950, 995, 2300, 2350, 3000, 3005, 3050, 3055, 5000, 5003, 5005, 5023, 5030, 5050, 5055, 5095, 5500, 5505, 5523, 9500, 9950, 9995, 23000, 23005, 23500, 30000, 30005, 30050, 30055, 30500, 30505, 30550, 50000, 50003, 50005, 50023, 50030, 50050, 50055, 50095, 50230, 50235, 50300

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..1374

J. Wellons, Tables of Shared Digits [archived]

Example

5390305205^2 = 29055390203050092025.

Mathematica

With[{c={0, 2, 3, 5, 9}}, Select[FromDigits/@Tuples[c, 5], SubsetQ[c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Jun 21 2021 *)

Crossrefs

Sequence in context: A271347 A222424 A067256 * A296920 A106857 A106307

Adjacent sequences: A136888 A136889 A136890 * A136892 A136893 A136894

Keyword

base,nonn

Author

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

Status

approved