<svg xmlns="http://www.w3.org/2000/svg" xmlns:wrs="http://www.wiris.com/xml/mathml-extension" height="37" width="47" wrs:baseline="23"><!--MathML: <math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="12px"><mn>16</mn><mfrac><msub><mi mathvariant="normal">n</mi><mn>2</mn></msub><msub><mi mathvariant="normal">n</mi><mn>1</mn></msub></mfrac><msub><mi mathvariant="normal">C</mi><mn>1</mn></msub></mstyle></math>--><defs><style type="text/css"/></defs><text font-family="Arial" font-size="12" text-anchor="middle" x="6.5" y="23">16</text><line stroke="#000000" stroke-linecap="square" stroke-width="1" x1="15.5" x2="30.5" y1="18.5" y2="18.5"/><text font-family="Arial" font-size="12" text-anchor="middle" x="20.5" y="11">n</text><text font-family="Arial" font-size="9" text-anchor="middle" x="26.5" y="15">2</text><text font-family="Arial" font-size="12" text-anchor="middle" x="20.5" y="30">n</text><text font-family="Arial" font-size="9" text-anchor="middle" x="26.5" y="34">1</text><text font-family="Arial" font-size="12" text-anchor="middle" x="36.5" y="23">C</text><text font-family="Arial" font-size="9" text-anchor="middle" x="43.5" y="27">1</text></svg>