A053948 Numbers k such that k^2 contains only digits {3,6,9}.
3, 6, 63, 264, 306, 1914, 3114, 31086, 81813, 190614, 251787, 310956, 184372811544, 631933060806, 3152295978114, 629836198308687, 2576231033241456, 18430047920827535573187, 31047286456844613647179386
Offset: 1
Links
- P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
- Author?, Source, (txt)
- H. Mishima, Sporadic tridigital solutions
Crossrefs
Cf. A053949.
Extensions
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005
One more term from Jon E. Schoenfield, Sep 04 2006
Three more terms from Mishima's webpage added by Max Alekseyev, Jun 17 2011
One more term from Zhao Hui Du, Mar 01 2024