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A027995
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a(n)=Sum{T(n,k)*T(n,k+1)}, 0<=k<=2n-1, T given by A027926.
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0
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2, 9, 36, 140, 542, 2100, 8152, 31707, 123542, 482119, 1884060, 7371715, 28874778, 113213129, 444285136, 1744931000, 6858286418, 26974115244, 106157250796, 418025117820, 1646975313678, 6492134765114, 25602897974056
(list; graph; refs; listen; history; internal format)
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