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A124852
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Number of base 10 circular n-digit numbers with adjacent digits differing by 2 or less.
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0
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1, 10, 44, 160, 672, 2860, 12482, 55198, 246712, 1111372, 5037174, 22940158, 104870790, 480863770, 2210197754, 10178143810, 46942294232, 216761695840, 1001878336772, 4634206919128, 21448419453382, 99316222901062
(list; graph; refs; listen; history; internal format)
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