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A223094
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Number of foldings of n labeled stamps in which leaf n is inwards.
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2
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0, 0, 2, 6, 26, 78, 288, 888, 3130, 9850, 34112, 108998, 374636, 1211046, 4148816, 13533796, 46304730, 152153758, 520434552, 1720325302, 5885686496, 19552190624, 66927118548, 223264746520, 764725528072, 2560239468774, 8775478294368, 29470844083770
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OFFSET
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1,3
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COMMENTS
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LINKS
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FORMULA
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MATHEMATICA
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A000682 = Import["https://oeis.org/A000682/b000682.txt", "Table"][[All, 2]];
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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