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A125344
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Number of base 7 circular n-digit numbers with adjacent digits differing by 4 or less.
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0
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1, 7, 43, 247, 1527, 9497, 59245, 369803, 2308687, 14413783, 89990323, 561842893, 3507795765, 21900487967, 136732988323, 853675514807, 5329817595487, 33276057627697, 207754954396765, 1297092388823683, 8098236068810727
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listen;
history;
text;
internal format)
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