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Search: id:A086864
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| A086864 |
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(n-1)*(n-2)*(n-3)*(3*n-10)*3^(n-5)/4. |
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1
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| 0, 0, 0, 1, 30, 360, 2970, 19845, 115668, 612360, 3018060, 14073345, 62788770, 270208224, 1128426390, 4594307445, 18302828040, 71553216240, 275154640632, 1042806816225, 3901324324230, 14427539010360, 52801538445810, 191427950399301, 688082033693340
(list; graph; listen)
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