a(0)=1; a(1)=2; a(n+1) = 2*n*a(n) - a(n-1) for n >= 1.
A093856
a(0)=1; a(1)=2; a(n+1) = 2*n*a(n) - a(n-1) for n >= 1.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =10a(4) =57a(5) =446a(6) =4403a(7) =52390a(8) =729057a(9) =11612522a(10) =208296339a(11) =4154314258a(12) =91186617337
External references
- oeis: A093856