15 self.assertTrue(o2n.isEqual(DataArrayInt([0,2,5,9,14,20,27,35,44,1,4,8,13,19,26,34,43,52,3,7,12,18,25,33,42,51,59,6,11,17,24,32,41,50,58,65,10,16,23,31,40,49,57,64,70,15,22,30,39,48,56,63,69,74,21,29,38,47,55,62,68,73,77,28,37,46,54,61,67,72,76,79,36,45,53,60,66,71,75,78,80])))