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A027202
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a(n) = Sum{T(n,k)*T(n,k+1), 0<=k<=n-1, T given by A026202.
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0
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1, 6, 35, 196, 1041, 5778, 29928, 165372, 847768, 4670704, 23822408, 130996724, 666301327, 3659417070, 18584154238, 101986105620, 517452054522
(list; graph; refs; listen; history; internal format)
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