A053975 Squares composed of digits {6,8,9}.
9, 6889, 69696, 698896, 9696996, 66699889, 9669968896, 669668898889, 686688996889, 989698666896, 86668968686689, 969896699696888896, 6869996688989986989889, 898889698869898988888689, 969986886696696688968996
Offset: 1
Links
- P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
- Hisanori Mishima, Sporadic tridigital solutions
Crossrefs
Cf. A053974.
Formula
a(n) = A053974(n)^2.
Extensions
More terms from Gareth McCaughan, Jun 11 2004