Determinant of the n X n matrix whose element (i,j) equals f(|i-j|) where f(n) is the sum of middle divisors (A071090).

A071547

Determinant of the n X n matrix whose element (i,j) equals f(|i-j|) where f(n) is the sum of middle divisors (A071090).

Terms

    a(0) =0a(1) =-1a(2) =2a(3) =0a(4) =-2a(5) =3a(6) =8a(7) =-259a(8) =-9006a(9) =37575a(10) =1988916a(11) =41615129a(12) =-444915500a(13) =4752358604a(14) =-50506657344a(15) =532544416084

External references