A058473 Numbers k such that k^2 contains only digits {0,1,9}, not ending with zero.

1, 3, 43694278824566964251, 100990098979999970099500001

Offset: 1

Author

Patrick De Geest, Nov 15 2000

Keywords

• nonn
• base
• hard
• more

Links

• P. De Geest, Index to related sequences
• Hisanori Mishima, Sporadic tridigital solutions
• Zhao Hui Du, Chinese BBS with updated data

Crossrefs

Cf. A058474.

Extensions

a(4) from Zhao Hui Du, Feb 28 2024