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A132847
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Column 1 of triangle A132845.
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5
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1, 2, 9, 42, 270, 1785, 13657, 108606, 943677, 8534290, 82099523, 819569205, 8575756709, 92782439316, 1042810799150, 12077608219410, 144446181373140, 1774918640030754, 22425992057948620, 290381947113460848
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