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A124951
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Number of base 23 circular n-digit numbers with adjacent digits differing by 2 or less.
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0
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1, 23, 109, 407, 1777, 7813, 35245, 160953, 742857, 3455597, 16177459, 76129593, 359815609, 1706868797, 8122449787, 38757778297, 185382123417, 888570946797, 4267072020187, 20525592779337, 98881792935527, 477011872851207
(list; graph; refs; listen; history; internal format)
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