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A027048
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a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A027023.
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1
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5, 29, 213, 1633, 12821, 102369, 826305, 6724933, 55108961, 454279229, 3764205941, 31334121045, 261903891425, 2197181330193, 18494163039793, 156140262436597
(list; graph; refs; listen; history; internal format)
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