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Search: id:A120581
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| A120581 |
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Hankel transform of sum{k=0..n, C(2k,k)*2^k}. |
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+0 1
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| 1, 4, -64, -28672, -17825792, -24696061952, -4398046511104, 6413125869375586304, 1279761316857673852911616, 565738597953418785628899770368, 372547299599873882347063111621541888, -5264848781000759906705331926184317767647232
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