how to insert double summation in the following equation

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YOGESHWARI PATEL
YOGESHWARI PATEL 2017-1-3
编辑： Star Strider 2017-1-3
my whole formula is
C(i,j+1)=-e(i+1)C(i+1,j)-fC(i,j)+Dsummation(r=0 to k)summation(s=0 to h) (M^s/s!)*(k+1)(k+2)C(k+2,h-s)
the code wrote is as follows . First i initial the value with the help of first for loop
for i=1:1:n+5
C1(1,1)=0.030792+0.009208;
C1(i,1)=(0.009208*((-0.00000588235)^(i-1))/factorial(i-1));
end
then my second for loop is to calculate C(0,1),C(1,1),......,C(0,2),C(1,2).....Now i am not getting how to include the double summation term as mention in the above formula
for j=1:1:n+1
for i=1:1:n+1
C1(i,j+1)=(a*i*C1(i+1,j)-b*C1(i,j)+c*(C2(i,j)-C1(i,j))+D1*i*(i+1)*C1(i+2,j))/j;
end
end

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