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
Links
- 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.
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