A053932 Numbers k such that k^2 contains only digits {2,7,9}.

3, 27, 173, 527, 5223, 85013527, 2824499473, 5271838173, 14907304327, 850281851974525726895170673

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Patrick 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 A378867

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

a(10) from Zhao Hui Du, Mar 06 2024

Status

approved