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A027987
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a(n) = Sum{T(n,k)*T(n,k+3)}, 0<=k<=2n-3, T given by A027960.
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0
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58, 272, 1154, 4757, 19378, 78422, 315994, 1269270, 5086294, 20345092, 81265106, 324240331, 1292556986, 5149091916, 20500830986, 81586994576, 324577199086, 1290904257426, 5133037194706, 20407032157936, 81119882902118
(list; graph; refs; listen; history; internal format)
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