gistfile1.groovy

def pyramider(max, lvl, count, maxlvl){
    if(count>=max)return lvl-1
    print " "*(maxlvl)    
    (1..lvl).each{print String.format("%3d", count+it)}
    println ""
    return pyramider(max, lvl+1, count+lvl, maxlvl-1<0?0:maxlvl-1)
}

pyramider(30, 1, 0, pyramider(30, 1, 0, 0))

gistfile2.txt

  1
  2  3
  4  5  6
  7  8  9 10
 11 12 13 14 15
 16 17 18 19 20 21
 22 23 24 25 26 27 28
 29 30 31 32 33 34 35 36
 37 38 39 40 41 42 43 44 45
          1
         2  3
        4  5  6
       7  8  9 10
     11 12 13 14 15
    16 17 18 19 20 21
   22 23 24 25 26 27 28
  29 30 31 32 33 34 35 36
 37 38 39 40 41 42 43 44 45
Result: 8