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A053962 Numbers k such that k^2 contains only digits {4,7,8}. 1
2, 22, 28, 88, 86478, 94227622, 9208064263934568938, 22019193553462506122 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

H. Mishima Squares consisted of 3 different digits [From Max Alekseyev, Mar 10 2009]

CROSSREFS

Cf. A053963.

Sequence in context: A074160 A137074 A137106 * A111771 A052001 A275029

Adjacent sequences:  A053959 A053960 A053961 * A053963 A053964 A053965

KEYWORD

nonn,base,more

AUTHOR

Patrick De Geest, Mar 15 2000

EXTENSIONS

Two more terms from Mishima's page added by Max Alekseyev, Mar 10 2009

STATUS

approved

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Last modified June 1 02:09 EDT 2020. Contains 334758 sequences. (Running on oeis4.)