Hi Hochgi, Welcome to Rosetta Code.
I was just looking at your additions to Fibonacci_n-step_number_sequences#Scala. You do show how easy it is to optimize code in Scala, but you may want to also add that for the purposes of the task BigInts and the other optimizations are not strictly necessary. This will dispel any notion that optimizations are required when printing such a small table of values. --Paddy3118 (talk) 07:22, 12 October 2014 (UTC)