a(n)=the (1,2)-entry of the n-th power of the 2 X 2 matrix [0,-1;n-1,2*(n-1)].
A109520
a(n)=the (1,2)-entry of the n-th power of the 2 X 2 matrix [0,-1;n-1,2*(n-1)].
Terms
- a(0) =-1a(1) =-2a(2) =-14a(3) =-180a(4) =-3344a(5) =-80750a(6) =-2394792a(7) =-84150248a(8) =-3417051136a(9) =-157409163162
External references
- oeis: A109520