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A053932 Numbers k such that k^2 contains only digits {2,7,9}. 1
3, 27, 173, 527, 5223, 85013527, 2824499473, 5271838173, 14907304327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

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

Author?, Source, (txt)

CROSSREFS

Cf. A053933.

Sequence in context: A056370 A056361 A141442 * A027507 A297670 A220820

Adjacent sequences:  A053929 A053930 A053931 * A053933 A053934 A053935

KEYWORD

nonn,base,more

AUTHOR

Patrick De Geest, Mar 15 2000

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005

STATUS

approved

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Last modified September 24 07:01 EDT 2020. Contains 337317 sequences. (Running on oeis4.)