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diff --git a/challenge-003/paulo-custodio/lua/ch-2.lua b/challenge-003/paulo-custodio/lua/ch-2.lua
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+#!/usr/bin/env lua
+
+--[[
+Challenge 003
+
+Challenge #2
+Create a script that generates Pascal Triangle. Accept number of rows from
+the command line. The Pascal Triangle should have at least 3 rows. For more
+information about Pascal Triangle, check this wikipedia page.
+--]]
+
+function draw_pascal(rows)
+    data = {1}
+    for row=1,rows do
+        -- print current row
+        for col=1,rows-row do io.write(" "); end
+        for col=1,row do io.write(data[col], " "); end
+        io.write("\n")
+
+        -- compute next row
+        nxt = {1}
+        for col=1,row-1 do
+            table.insert(nxt, data[col] + data[col+1])
+        end
+        table.insert(nxt, 1)
+        data = nxt
+    end
+end
+
+draw_pascal(tonumber(arg[1]))