title: R: How to make sequence (1,1,1,2,3,3,3,4,5,5,5,6,7,7,7,8)
body: <p>Title says it all: how would I code such a repeating sequence where the base repeat unit is : a vector c(1,1,1,2) - repeated 4 times, but incrementing the values in the vector by 2 each time?</p>
  
  <p>I've tried a variety of rep,times,each,seq and can't get the wanted result out..</p>