A058454 Squares composed of digits {0,7,9}, not ending with zero.

9, 77777799799099990007000790009009

Offset

1,1

Links

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

Patrick De Geest, Index to related sequences

Shyam Sunder Gupta, Elegance of Squares, Cubes, and Higher Powers, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 2, 29-81.

Hisanori Mishima, Sporadic tridigital solutions

Crossrefs

Cf. A058453.

Sequence in context: A058434 A067487 A058448 * A058472 A058474 A285476

Adjacent sequences: A058451 A058452 A058453 * A058455 A058456 A058457

Keyword

nonn,base,hard,more,bref

Author

Patrick De Geest, Nov 15 2000

Status

approved