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A027997 Sum{T(n,k)*T(n,k+3)}, 0<=k<=2n-3, T given by A027926. +0
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16, 70, 292, 1197, 4864, 19656, 79124, 317592, 1271976, 5085730, 20307396, 81003583, 322847552, 1285900570, 5119076236, 20370229878, 81032093192, 322258628220, 1281334227276, 5093898416278, 20248096412336, 80478051058480 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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