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

1, 3, 43694278824566964251, 100990098979999970099500001

Offset

1,2

Links

Table of n, a(n) for n=1..4.

P. De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

Zhao Hui Du, Chinese BBS with updated data

Crossrefs

Cf. A058474.

Sequence in context: A058453 A058471 A068740 * A115527 A050920 A001231

Adjacent sequences: A058470 A058471 A058472 * A058474 A058475 A058476

Keyword

nonn,base,hard,more

Author

Patrick De Geest, Nov 15 2000

Extensions

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

Status

approved