negative coefficients (i,j<=60): 0 []
zero coefficients with i<=6, j<=4: [(0, 0), (0, 1), (0, 2), (0, 3), (0, 4), (1, 0), (1, 1), (1, 2), (1, 3), (1, 4), (2, 0), (2, 1), (2, 2), (3, 0), (3, 1), (4, 0)]
lowest nonzero terms: [(5, 2, 3, Fraction(1, 12)), (5, 3, 2, Fraction(1, 3)), (5, 4, 1, Fraction(5, 12)), (5, 5, 0, Fraction(1, 6)), (6, 2, 4, Fraction(1, 24)), (6, 3, 3, Fraction(1, 4)), (6, 4, 2, Fraction(13, 24)), (6, 5, 1, Fraction(1, 2))]
claimed coefficient formula matches bracket expansion: True
