a(n) is the permanent of the unipotent Sylvester-Kac tridiagonal matrix of order n having main diagonal [0, 2, ..., 2*(n-1)], superdiagonal [1, 2, ..., n-1], and [subdiagonal 1-n, 2-n, ..., -1].
A390821
a(n) is the permanent of the unipotent Sylvester-Kac tridiagonal matrix of order n having main diagonal [0, 2, ..., 2*(n-1)], superdiagonal [1, 2, ..., n-1], and [subdiagonal 1-n, 2-n, ..., -1].
Terms
- a(0) =1a(1) =0a(2) =-1a(3) =-8a(4) =-63a(5) =-512a(6) =-4025a(7) =-24192a(8) =71393a(9) =7340032a(10) =212453199a(11) =4904704000a(12) =99297793441
External references
- oeis: A390821