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Search: id:A026947
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| A026947 |
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a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=n-1, T given by A026374. |
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| 1, 6, 24, 144, 541, 3258, 12275, 74280, 282003, 1713690, 6549906, 39938616, 153481299, 938430990, 3622111560, 22195961280, 85975792075, 527816696850
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