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+#lang racket
+
+;; https://www.codewars.com/kata/515f51d438015969f7000013
+
+(provide pyramid)
+
+(define (pyramid n)
+  (define (loop ret level cur)
+    (define next (cons 1 cur))
+    (if (= level n)
+        (reverse ret)
+        (loop (cons next ret) (+ level 1) next)))
+  (loop '() 0 '()))
+