-3883

Appears in sequences

• Array of coefficients of characteristic polynomials of M_n, the n X n matrix with entries m_(i,j) = i mod j.at n=58A078924
• a(0) = 1, a(1) = 2, a(2) = 5; for n >= 3, a(n) = a(n - 1) - 2*a(n - 2) + a(n - 3).at n=27A121311