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A026953
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a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026386.
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0
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1, 8, 41, 272, 1168, 7428, 30302, 189808, 759101, 4724160, 18728841, 116207424, 458829051, 2842936320, 11203933255, 69378730880, 273211969075
(list; graph; refs; listen; history; internal format)
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