A031154 Numbers k such that k^2 contains only digits {2,4,5}.

2, 5, 15, 65, 235, 665, 2132, 2335, 6515, 6665, 23335, 47162, 66515, 66665, 67485, 233335, 235065, 666515, 666665, 2333335, 6666515, 6666665, 23333335, 64980962, 66666515, 66666665, 233333335, 666666515, 666666665, 2333333335, 5044357665

Offset: 1

Author

Patrick De Geest

Keywords

• nonn
• base

Links

• Zhao Hui Du, Table of n, a(n) for n = 1..106
• Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences
• Author?, Source(txt)

Crossrefs

Cf. A031152.

Extensions

Extended and corrected by author Mar 15 2000

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