1.38|

$ cd ~

SICP Exercise 1.38

The math was a bit tedious in this one, trying to calculate the pattern took me a while.

(define (e-euler k)
  (+ 2.0
     (cont-frac (lambda (i) 1.0)
                (lambda (i)
                  (if (= (remainder i 3) 2)
                      (/ (+ i 1) 1.5)
                      1))
                k)))