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A026964
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a(n) = Sum{T(n,k)*T(n,k+3)}, 0<=k<=n-3, T given by A026626.
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0
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1, 12, 77, 434, 1978, 8830, 37409, 156474, 644305, 2632506, 10684360, 43166246, 173768764, 697596990, 2794438513, 11174809302, 44626341136, 178018744896, 709505830530
(list; graph; refs; listen; history; internal format)
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