A053900 Numbers k such that k^2 contains only digits {1,4,8}.

1, 2, 9, 12, 21, 22, 29, 38, 109, 122, 221, 1191, 20359, 12017441, 64352012, 69362229, 105741122, 1347014779, 10715008859, 664190348029, 940313186572, 4263966676478, 34479242283029, 1055656895701022, 2968363385585478

Offset: 1

Author

Patrick De Geest, Mar 15 2000

Keywords

• nonn
• base

Links

• Zhao Hui Du, Table of n, a(n) for n = 1..31
• Author?, Source(txt)
• Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences
• H. Mishima, Squares consisted of 3 different digits [From _Max Alekseyev_, May 29 2009]

Crossrefs

Cf. A053901.

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005

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

Further terms from Mishima's webpage added by Max Alekseyev, May 29 2009