Triangular array T(n, k) read by rows: denominators of the coefficients for the iterated exponential F^{r}(x) = x + Sum_{n>=1} x^(n+1)*Sum_{k=1..n} r^(n+1-k)*T(n, k)/A381931(n, k) with F^{1}(x) = exp(x)-1 and F^{2}(x) = exp(exp(x)-1)-1.
A381932
Triangular array T(n, k) read by rows: denominators of the coefficients for the iterated exponential F^{r}(x) = x + Sum_{n>=1} x^(n+1)*Sum_{k=1..n} r^(n+1-k)*T(n, k)/A381931(n, k) with F^{1}(x) = exp(x)-1 and F^{2}(x) = exp(exp(x)-1)-1.
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-5a(5) =1a(6) =1a(7) =-13a(8) =1a(9) =-1a(10) =1a(11) =-77a(12) =89a(13) =-91a(14) =11a(15) =1a(16) =-29a(17) =175a(18) =-149a(19) =91a(20) =-1a(21) =1a(22) =-223a(23) =1501a(24) =-37a(25) =391a(26) =-43a(27) =-11a(28) =1a(29) =-481
External references
- oeis: A381932