A136895 Numbers k such that k and k^2 use only the digits 0, 2, 3, 7 and 9.

0, 3, 27, 30, 270, 300, 2700, 3000, 27000, 30000, 270000, 300000, 2700000, 3000000, 27000000, 27032203, 27077797, 30000000, 30332997, 270000000, 270322030, 270777970, 300000000, 303329970, 2700000000, 2703220300, 2707779700, 2720293723, 2779023223, 3000000000, 3033299700, 27000000000, 27032203000, 27077797000

Offset

1,2

Comments

Generated with DrScheme.

Links

Jonathan Wellons, Table of n, a(n) for n = 1..119

J. Wellons, Tables of Shared Digits [archived]

Example

303772939923923^2 = 92277999030023332093027709929.

Crossrefs

Sequence in context: A334567 A284863 A121068 * A319391 A034594 A077533

Adjacent sequences: A136892 A136893 A136894 * A136896 A136897 A136898

Keyword

base,nonn,changed

Author

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

Status

approved