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A027141
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a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=2n-1, T given by A027113.
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0
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3, 23, 165, 1218, 9247, 71688, 564759, 4506005, 36324407, 295341956, 2418783687, 19932773439, 165151576215, 1374850036253, 11493442158373, 96443092570534
(list; graph; refs; listen; history; internal format)
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