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A107659
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Sum 2^max(k,n-k),k=0..n.
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2
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1, 4, 10, 24, 52, 112, 232, 480, 976, 1984, 4000, 8064, 16192, 32512, 65152, 130560, 261376, 523264, 1047040, 2095104, 4191232, 8384512, 16771072, 33546240, 67096576, 134201344, 268410880, 536838144, 1073692672, 2147418112
(list; graph; refs; listen; history; internal format)
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