fix error in notebook

Author: fedimser

research/Incrementer.ipynb

@@ -452,7 +452,7 @@
     "for n in list(range(2, 100))+ list(range(200, 5001, 100)):\n",
     "    ancilla_cto, _ = counts_cto(n)\n",
     "    assert ancilla_cto == math.floor(math.log2(n))-1\n",
-    "    ancilla_ff, _ = counts_cto(n)\n",
+    "    ancilla_ff, _ = counts_ff(n)\n",
     "    assert ancilla_ff == math.floor(math.log2(n))-1\n",
     "    ancilla_inc, _ = counts_inc(n)\n",
     "    assert ancilla_inc == 2 * math.ceil(math.log2(n + 2)) - 1\n",