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A058419 Numbers k such that k^2 contains only digits {0,1,7}, not ending with zero. 1
1, 27749, 8427200114569499 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..3.

P. De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

CROSSREFS

Cf. A058420.

Sequence in context: A210161 A096027 A249000 * A235208 A251494 A327962

Adjacent sequences:  A058416 A058417 A058418 * A058420 A058421 A058422

KEYWORD

nonn,base,hard,more,bref

AUTHOR

Patrick De Geest, Nov 15 2000

STATUS

approved

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Last modified July 27 15:29 EDT 2021. Contains 346307 sequences. (Running on oeis4.)