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A026948
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a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026374.
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0
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1, 8, 58, 272, 1770, 7428, 46928, 189808, 1185645, 4724160, 29362806, 116207424, 720606705, 2842936320, 17610412600, 69378730880, 429579843435
(list; graph; refs; listen; history; internal format)
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