PNG  IHDRW*4Z@0PLTE@@@ftRNSS pHYsetEXtTitleInftyEditor MathImageytEXtAuthorAdministrator*6tEXtDescription $ \bm{2}^{\bm{2}\bm{n}}-\bm{2}^{\bm{n}} $jtEXtCopyrightInftyProject@$tEXtCreation Time r'rr'rr IDATx @(@ 0B$CM Y`r 7qV`<'I;u2g;G7 \&gqY`Gd+?'"u;`ݽ3Ar$qj}`0_xn΍X[G])/?1q/sILis:?8 |Ɵ̅/7~j3:֮>IENDB`