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A126385
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Number of base 31 n-digit numbers with adjacent digits differing by one or less.
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4
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1, 31, 91, 269, 797, 2365, 7025, 20883, 62115, 184845, 550289, 1638775, 4881719, 14545715, 43350415, 129222077, 385262397, 1148802957, 3426077313, 10218944199, 30483682935, 90944672583, 271351287651, 809707376697
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