a(n+1) = a(n)^2 - (-1)^n * binomial(n+2,2) with a(1) = 1.
A118378
a(n+1) = a(n)^2 - (-1)^n * binomial(n+2,2) with a(1) = 1.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =110a(4) =12085a(5) =146047246
External references
- oeis: A118378
A118378
a(n+1) = a(n)^2 - (-1)^n * binomial(n+2,2) with a(1) = 1.