A053886 Numbers k such that k^2 contains only digits {1,2,8}.

1, 9, 11, 91, 109, 359, 3359, 15109, 33359, 333359, 3333359, 14903989, 15127091, 28497739, 33333359, 90450109, 333333359, 3333333359, 33333333359, 46023126591, 333333333359, 1697404542909, 3333333333359, 33333333333359

Offset: 1

Author

Patrick De Geest, Mar 15 2000

Keywords

• nonn
• base

Links

• Zhao Hui Du, Table of n, a(n) for n = 1..44
• Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences
• Author?, Source(txt)

Crossrefs

Cf. A053887.

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005

Three more terms from Jon E. Schoenfield, Sep 03 2006