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A027140
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a(n) = Sum{T(n,k)*T(n,n+k)}, 0<=k<=n, T given by A027113.
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0
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1, 3, 12, 57, 264, 1261, 6141, 30276, 150853, 758145, 3836896, 19534086, 99957904, 513756551, 2650822585, 13724435509, 71275344341, 371177285715, 1937791196448, 10139548682524, 53165765660928, 279301910804937
(list; graph; refs; listen; history; internal format)
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