integrate (n*(n%2B1))%5E2*(30*n%5E10 %2B150*n%5E9 %2B125*n%5E8 -400*n%5E7 -326*n%5E6 %2B1052*n%5E5 %2B367*n%5E4 -1786*n%5E3 %2B202*n%5E2 %2B1382*n -691) %2F 420 from -1 to 0

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