1 files changed, 19 insertions, 0 deletions

diff --git a/sicp.org b/sicp.org
index 9c9cfed..1b0a589 100644
--- a/sicp.org
+++ b/sicp.org
@@ -282,3 +282,22 @@ I could not come up with a an iterative procedure.
 
 two versions of the recursive procedure are available at
 one/eleven.scm.
+*** 12
+
+#+BEGIN_SRC
+              1
+             1 1
+            1 2 1
+           1 3 3 1
+          1 4 6 4 1
+         1 5 10 10 5 1
+        1   6 15 20 15 6 1
+       1 7   21  35  35  21  7  1
+      1   8   28  56  70  56  28 8 1
+     1  9  36  84  126 126 84  36 9 1
+    1 10 45 120 210 252 210 120 45 10 1
+   1 11 55 165 330 462 462 330 165 55  11  1
+   1  12  66   220  495  792  924  792  495  220 66 12 1
+ 1  13 78  286  715  1287 1716 1716 1287 715  286 78 13 1
+1 14 91 364 1001 2002 3003 3432 3003 2002 1001 364 91 14 1
+#+END_SRC