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A070863
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Sum of numbers in n-th row of A070861.
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2
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1, 3, 12, 60, 360, 2268, 18144, 152544, 1471008, 14963328, 179559936, 2156963328, 30197486592, 426680825088, 6448500066288, 103658110188528, 1865845983393504, 33623263082197152, 672465261643943040
(list; graph; refs; listen; history; internal format)
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