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A126397
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Number of base 10 n-digit numbers with adjacent digits differing by two or less.
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3
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1, 10, 44, 200, 918, 4236, 19598, 90790, 420870, 1951636, 9051480, 41983154, 194736668, 903293618, 4190003458, 19435777562, 90155141564, 418195731384, 1939853565942, 8998257693932, 41739569773726, 193614349514214
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