A053958 Numbers k such that k^2 contains only digits {4,6,8}.

2, 8, 22, 92, 262, 2978, 258238, 805262, 9191762, 81784378, 696037692, 2546858238, 93095030408, 2620848420738, 26204321529981784378

Offset

1,1

Links

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

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

Hisanori Mishima, Sporadic tridigital solutions.

Author?, Source(txt)

Crossrefs

Cf. A053959.

Sequence in context: A183410 A072929 A328140 * A300370 A191643 A151356

Adjacent sequences: A053955 A053956 A053957 * A053959 A053960 A053961

Keyword

nonn,base,hard,more

Author

Patrick De Geest, Mar 15 2000

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005

One more term from Jon E. Schoenfield, Sep 04 2006

a(15) from Mishima's website added by Elmo R. Oliveira, Jul 16 2025

Status

approved