A053972 Numbers k such that k^2 contains only digits {6,7,9}.

3, 26, 264, 313, 3114, 3114113, 278922387, 881361264, 2603208937, 3125343176, 312518799063, 2770739969214, 8366461419063, 260723947264113, 9831977256725526

Offset

1,1

Links

Table of n, a(n) for n=1..15.

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

Author?, Source (txt)

Hisanori Mishima, Sporadic tridigital solutions

Crossrefs

Cf. A053973.

Sequence in context: A062793 A300398 A048861 * A204561 A126738 A283298

Adjacent sequences: A053969 A053970 A053971 * A053973 A053974 A053975

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

Two more terms from Jon E. Schoenfield, Sep 04 2006

a(14)-a(15) from Mishima's website, added by Max Alekseyev, Nov 30 2017

Status

approved