A053888 Numbers k such that k^2 contains only digits {1,2,9}.
1, 3, 11, 173, 3161, 34827, 43923, 44623, 54123, 1108661, 9603239, 14832161, 9960980373, 1513668461761, 99961098929489127, 459556524411439511, 145303131149776986249167839
Offset: 1
Links
- Author?, Source(txt)
- P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
- H. Mishima, Squares consisting of 3 different digits
Crossrefs
Cf. A053889.
Extensions
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
One more term from Jon E. Schoenfield, Sep 03 2006
Two more terms from Mishima's webpage added by Max Alekseyev, Jun 17 2011
a(17) from Zhao Hui Du, Feb 29 2024