a(n) = (n+7)*a(n-1) + (n-1)*a(n-2), a(-1)=0, a(0)=1.
A176734
a(n) = (n+7)*a(n-1) + (n-1)*a(n-2), a(-1)=0, a(0)=1.
Terms
- a(0) =1a(1) =8a(2) =73a(3) =746a(4) =8425a(5) =104084a(6) =1395217a(7) =20157542a(8) =312129649a(9) =5155334720a(10) =90449857081
External references
- oeis: A176734