A058461 - OEIS

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A058461

Numbers k such that k^2 contains only digits {2,6,7}.

1

26, 526, 1636345826, 512130136076, 150573163864701424

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

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

P. De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

CROSSREFS

Sequence in context: A163201 A205990 A230247 * A323492 A265461 A257518

Adjacent sequences: A058458 A058459 A058460 * A058462 A058463 A058464

KEYWORD

nonn,base,hard,more

AUTHOR

Patrick De Geest, Nov 15 2000

EXTENSIONS

a(5) (from the Mishima web site) added by Max Alekseyev, Jan 11 2007

STATUS

approved