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A124947
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Number of base 19 circular n-digit numbers with adjacent digits differing by 2 or less.
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0
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1, 19, 89, 331, 1437, 6289, 28241, 128413, 590197, 2734297, 12749679, 59763613, 281370909, 1329632401, 6303226767, 29963180101, 142776168261, 681776377177, 3261689820791, 15630400760077, 75015245736567, 360509440244557
(list; graph; refs; listen; history; internal format)
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