Question Number 163024 by SANOGO last updated on 03/Jan/22
$${calcul}\:{en}\:{fonction}\:{de}\:{n} \\ $$$$\underset{{k}=\mathrm{0}} {\overset{\mathrm{2}{n}} {\sum}}\left(_{{k}} ^{\mathrm{2}{n}} \right)^{{n}−\mathrm{2}{k}} \\ $$
Commented by SANOGO last updated on 03/Jan/22
$${i}'{m}\:{sur}\:{sir} \\ $$
Commented by mr W last updated on 03/Jan/22
$${are}\:{you}\:{sure}\:{there}\:{is}\:{no}\:{typo}? \\ $$