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Task/Fibonacci-n-step-number-sequences/EchoLisp/fibonacci-n-step-number-sequences.echolisp

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+;; generate a recursive lambda() for a x-nacci
+;; equip it with memoïzation
+;; bind it to its name
+(define (make-nacci name seed)
+		(define len (1+ (vector-length seed)))
+		(define-global name
+			`(lambda(n) (for/sum ((i (in-range (1- n) (- n ,len) -1)))  (,name i))))
+		(remember name seed)
+		name)
+		
+(define nacci-family `(
+	(Fibonacci #(1 1))
+	(Tribonacci #(1 1 2))
+	(Tetranacci #(1 1 2 4))
+	(Decanacci #(1 1 2 4 8 16 32 64 128 256))
+	(Random-😜-nacci ,(list->vector (take 6 (shuffle (iota 100)))))
+	(Lucas #(2 1))))
+	
+(define (task naccis)
+	(for ((nacci naccis))
+		(define-values (name seed) nacci)
+		(make-nacci name seed)
+		(printf "%s[%d]  → %d" name (vector-length seed) (take name 16))))