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Search: id:A027273
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| A027273 |
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a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=2n-1, T given by A026552. |
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| 2, 16, 52, 428, 1516, 12792, 46936, 402164, 1504432, 13015480, 49288856, 429204354, 1639174304, 14340670000, 55108565584, 483825847108
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