Generate a repeating sequence

Question

I need to generate a vector of the following format using R:

1:10, 1:10, 11:20, 11:20, ... 121:130, 121:130

Is there an easier way than creating 12 vectors and then repeating each one twice?

Answer 1

Also you could do:

rep(1:10, 26) + rep(seq(0,120,10), each=20)