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A027234
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a(n) = Sum{T(n,k)*T(n,k+3), 0<=k<=n-3, T given by A026758.
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0
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1, 9, 62, 320, 1837, 8376, 45666, 198471, 1065418, 4523403, 24247545, 101589616, 547233490, 2273356598, 12341618508, 50963502172, 279167141052
(list; graph; refs; listen; history; internal format)
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