A053906 Numbers k such that k^2 contains only digits {1,6,7}.

1, 4, 26, 131, 276, 881, 3431, 81346, 81619, 129119, 132954, 1292931424

Offset

1,2

Links

Table of n, a(n) for n=1..12.

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

Crossrefs

Cf. A053907.

Sequence in context: A363648 A184263 A058408 * A359962 A316539 A197964

Adjacent sequences: A053903 A053904 A053905 * A053907 A053908 A053909

Keyword

nonn,base,more

Author

Patrick De Geest, Mar 15 2000

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005

Status

approved