let tuple1 = (1, 3) //tuple (int, int)
  let tuple2 = 1, 3 //same as before, parens are optional

  let list = [ 1; 2; 3 ] //list of int

  let array = [| 1; 2; 3; |] //array of int

  let listOfTuple1 = [ (0,0); (1,2); (4,5) ] //list of tuple (int, int)
  let listOfTuple2 = [  0,0;   1,2;   4,5  ] //same as before

nice and fast syntax guide http://fsharpforfunandprofit.com/posts/fsharp-in-60-seconds/