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A053894
Numbers k such that k^2 contains only digits {1,3,8}.
1
1, 9, 109, 3652141, 286074095527510693610891
OFFSET
1,2
CROSSREFS
Cf. A053895.
Sequence in context: A359731 A105974 A053912 * A053904 A058607 A298835
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 2000
EXTENSIONS
One more term from Mishima's webpage added by Max Alekseyev, Jun 17 2011
STATUS
approved