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A031154 Numbers n such that n^2 contains only digits {2,4,5}. 1
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; internal format)
OFFSET

1,1

LINKS

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Author?, Source(txt)

CROSSREFS

Cf. A031152.

Sequence in context: A201702 A202037 A166355 * A090091 A158079 A133645

Adjacent sequences:  A031151 A031152 A031153 * A031155 A031156 A031157

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

EXTENSIONS

Extended and corrected by author Mar 15 2000.

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

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.