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A053966 Numbers k such that k^2 contains only digits {4,8,9}. 1
2, 3, 7, 22, 67, 212, 667, 707, 6667, 21212, 66667, 666667, 974417, 3160457, 6666667, 9974417, 21200212, 66666667, 210914543, 666666667, 973883712, 6666666667, 6670081667, 66666666667, 666666666667 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

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

Author?, Source(txt)

CROSSREFS

Cf. A053967.

Sequence in context: A067738 A296287 A187014 * A010738 A114599 A094062

Adjacent sequences:  A053963 A053964 A053965 * A053967 A053968 A053969

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Mar 15 2000

EXTENSIONS

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

STATUS

approved

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Last modified April 11 00:03 EDT 2021. Contains 342877 sequences. (Running on oeis4.)