A058421 - OEIS

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A058421

Numbers k such that k^2 contains only digits {0,1,8}, not ending with zero.

2

1, 9, 109, 901, 1009, 9001, 10009, 10401, 90001, 100009, 100901, 900001, 1000009, 1004001, 8954391, 9000001, 10000009, 10009001, 34351141, 90000001, 100000009, 100040001, 900000001, 1000000009, 1000090001, 3163554991, 9000000001, 10000000009, 10000400001

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Zhao Hui Du, Table of n, a(n) for n = 1..91

Patrick De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

CROSSREFS

Sequence in context: A001691 A157906 A166846 * A267795 A128876 A199030

Adjacent sequences: A058418 A058419 A058420 * A058422 A058423 A058424

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 15 2000

EXTENSIONS

Terms a(28) and above from Zhao Hui Du, Mar 07 2024

STATUS

approved