Special functions Packages

Create an iterator which evaluates the factorial function for each iterated value.

Create an iterator which evaluates the natural logarithm of the factorial function for each iterated value.

Evaluate ln(1+x) - x.

Compute the natural logarithm of exp(x) + exp(y).

Compute the nth Lucas number.

Compute the nth Tribonacci number.

Compute the nth negaFibonacci number.

Compute the nth negaLucas number.

Compute the nth non-Fibonacci number.