Determinant of the n X n matrix whose element (i,j) equals f(|i-j|) where f(n) is 1 if the sum of middle divisors (A071090) > 0, else 0.

A071548

Determinant of the n X n matrix whose element (i,j) equals f(|i-j|) where f(n) is 1 if the sum of middle divisors (A071090) > 0, else 0.

Terms

    a(0) =0a(1) =-1a(2) =2a(3) =0a(4) =0a(5) =0a(6) =2a(7) =1a(8) =-4a(9) =12a(10) =0a(11) =-12a(12) =-4a(13) =7a(14) =44a(15) =48a(16) =0a(17) =-48a(18) =44a(19) =345a(20) =334a(21) =-1196a(22) =2328a(23) =4796a(24) =8022a(25) =-35417a(26) =123840a(27) =-118503a(28) =89082a(29) =48160

External references