a(n) = A083962(n)/n.

Terms

a(0) =1a(1) =106a(2) =7374a(3) =1055306a(4) =108442449a(5) =10903687076a(6) =522031603509a(9) =0a(10) =91a(11) =17501a(12) =15400770154a(13) =14300715143