A053966 Numbers k such that k^2 contains only digits {4,8,9}.

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

Offset

1,1

Links

Zhao Hui Du, Table of n, a(n) for n = 1..45

Patrick 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