1/48 (2 n^4 - 8 n^3 + 4 n^2 + 8 n + 3 (-1)^n - 3) for n=3...161/48 (2 n^4 - 8 n^3 + 4 n^2 + 8 n + 3 (-1)^n - 3) for n=3...16

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