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A027142
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a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A027113.
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0
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12, 105, 831, 6648, 53545, 434458, 3548871, 29166324, 241006333, 2001145585, 16688238416, 139711675493, 1173762075101, 9892582661593, 83617537623039
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