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A026994
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a(n) = Sum{T(n,k)*T(n,k+3)}, 0<=k<=n-3, T given by A026692.
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0
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1, 8, 55, 348, 2089, 10930, 59507, 303260, 1541766, 7603878, 39661955, 193854488, 942975507, 4575005798, 23493563115, 113291185280, 541966221369
(list; graph; refs; listen; history; internal format)
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