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a023409 -id:a023409
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A053337
a(n) contains n digits (either '6' or '7') and is divisible by 2^n.
+10
1
6, 76, 776, 7776, 67776, 667776, 6667776, 66667776, 766667776, 6766667776, 66766667776, 666766667776, 7666766667776, 77666766667776, 777666766667776, 7777666766667776, 77777666766667776, 777777666766667776
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CROSSREFS
Cf.
A023409
,
A050621
,
A050622
,
A035014
.
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