Increment change For loop

Hello,

I want to gradually increase a FOR loop increment during a program.

For example:

for i=1:2:200

after 10 steps I want the step size increases automatically to 4

Thanks in advance

Answer 1

[David Hill]

for i=[1:2:19,23:4:200]
    
end

Answer 2

[KSSV]

val = [1:2:19,23:4:200] ; 
N = length(val) ; 
iwant = zeros(1,N) ; 
for i = 1:N
    iwant(i) = val(i)  % In case you want to store some result out of it 
    
end