A053880 Numbers k such that k^2 contains only digits {1,2,4}.
1, 2, 11, 12, 21, 38, 338, 1488, 3338, 11011, 20521, 33338, 210771, 333338, 3333338, 14636332, 15570521, 20279162, 33333338, 45947921, 49136668, 66641662, 333333338, 648940838, 3333333338, 6412661079, 14632642079, 33333333338
Offset: 1
Links
- Zhao Hui Du, Table of n, a(n) for n = 1..54
- Author?, Source(txt)
- P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
Crossrefs
Cf. A053881.
Extensions
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005