A031154 - OEIS

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A031154

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

2

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

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

Sequence in context: A224917 A274100 A166355 * A270534 A268116 A268123

Adjacent sequences: A031151 A031152 A031153 * A031155 A031156 A031157

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

EXTENSIONS

Extended and corrected by author Mar 15 2000

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

STATUS

approved