How can I replicate this matrix

I have F= 20x12 matrix and I want to get F2 =62x12 matrix in such away that The each element of F(20X12)is replicated by 3 and the last value has to be replicated 5 times so as to have 62x12 data

here is the matrix I worked upon and failed

 for k =size(F,1);
  a=repmat(F,3,1);
  F2=[a(:);ones(2,1)*a(end)]
 end;

but couldn't succeed..any help is highly appreciated

Answer 1

[Pedro Villena]

n=3; %%three times
m=2; %%plus two times for the final row
F2 = [];
for k=1:size(F,1),
    F2 = [F2; repmat(F(k,:),n,1)];
end
F2 = [F2; repmat(F(end,:),m,1)];

[Ede gerlderlands]

Thanks

Answer 2

[Walter Roberson]

F2 = [repmat(F, 3, 1), F([end end], :)];

[Ede gerlderlands]

Thanks, but this replicate the entire F three times not each element of 'F' successively and that's what I want?

[Walter Roberson]

F2 = [kron(F, ones(3, 1)); F([end end], :)];

Answer 3

[Daniel Shub]

I like questions that can be answered with one-liners ...

F([reshape(repmat(1:length(F), 3, 1), 3*length(F), 1); repmat(length(F), 2, 1)], :)

[Ede gerlderlands]

Thanks