Bruneau: Summation using sigma function in Excel

Summation using sigma function in Excel

I have an equation shown below in which i want plot data for T(x,y) in
excel, any suggestions on how to do it:
T(x,y)=∑24_(&#55349;&#56408;=1)^20▒〖〖((−1)〗^&#55349;&#56408;

+1)∗sin⁡(&#55349;&#56408;∗3.14∗&#55349;&#56421;/2)∗sinh⁡(&#55349;&#56408;∗3.14∗&#55349;&#56422;∗0.5)/sinh⁡(&#55349;&#56408;∗3.14∗0.5))〗