a(n) = 3*n*a(n-1) + 1, a(0) = 1.
A010845
a(n) = 3*n*a(n-1) + 1, a(0) = 1.
Terms
- a(0) =1a(1) =4a(2) =25a(3) =226a(4) =2713a(5) =40696a(6) =732529a(7) =15383110a(8) =369194641a(9) =9968255308a(10) =299047659241
External references
- oeis: A010845
A010845
a(n) = 3*n*a(n-1) + 1, a(0) = 1.