a(1) = 1; a(n+1) = a(1) + a(2)*(a(2) + a(3)*(a(3) +...+a(n-1)*(a(n-1) + a(n))...)).
A061291
a(1) = 1; a(n+1) = a(1) + a(2)*(a(2) + a(3)*(a(3) +...+a(n-1)*(a(n-1) + a(n))...)).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =14a(5) =150a(6) =18406a(7) =311742406
External references
- oeis: A061291