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A053913
Squares composed of digits {1,7,8}.
2
1, 81, 11881, 78881777881, 11187111187877881, 77878887787187881
OFFSET
1,2
CROSSREFS
Cf. A053912.
Sequence in context: A237027 A185847 A058422 * A053895 A053905 A184690
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 2000
STATUS
approved