A058471 Numbers k such that k^2 contains only digits {7,8,9}.

3, 9949370777987917

Offset

1,1

Links

Table of n, a(n) for n=1..2.

P. De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

Crossrefs

Cf. A058472.

Sequence in context: A266199 A216148 A058453 * A068740 A058473 A115527

Adjacent sequences: A058468 A058469 A058470 * A058472 A058473 A058474

Keyword

nonn,base,hard,more,bref

Author

Patrick De Geest, Nov 15 2000

Status

approved