[HP41] Lambda Modular function; question

[floppy]

Hello,
is anywhere a program to calculate the points of lambda with an HP41? RPN or RPN in MOD or Microcode in MOD? with complex numbers.
In Wiki, there is a curve https://en.wikipedia.org/wiki/Modular_la...nction.svg
First I would like to calculate several points of
a) lambda(i*x) then
b) (e^(1/e))*(1-lambda(i*x)) then..
x between 0 and 10.
Any advise is welcome.
(if none exists in HP41 - or HP71 -, I will look at other calculator or PC-computing)