How to generate the random number with restrictions?

For [1 2 3 ........35], I want to generate random number but the restriction is i want random numbers from [1 2 3...28] as [1 5 9 13 17 21 25] and then after any random number from [29 30 ...35] as normal.

Answer 1

[Guillaume]

Your question is not very clear, what is a random number "as normal"?

Anyway, to get random numbers from a specific pool of numbers, generate random indices that you use to pick numbers from the pool:

pool = 1:4:25; %pool of numbers pick  
numbers = pool(randi(numel(pool), 1, 28)) %choose 28 values from the pool at random.

Answer 2

[Andrei Bobrov]

a1 = 1:28
a2 = 29:35
out = [a1(randperm(numel(a1),7)),a2(randi(numel(a2)))]

[Raja R]

Thanks Andrei Bobrov