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If any even power of 2 ends with k 1's and 6's, they must be the first k elements terms of this sequence in reverse order.
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nonn,base,changed
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Ray Chandler, <a href="/A023406/b023406.txt">Table of n, a(n) for n = 1..10000</a>
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0,1,1
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_David W. Wilson (davidwwilson(AT)comcast.net)_
nonn,new
nonn
David W. Wilson (davidwwilson(AT)attbicomcast.comnet)