Pattern Recognition - 131

Find out the next two numbers in the series.
1247 , 1116 , 2229, 3746,_ , _ ,..............


Answer

1247 ,    1116 ,   2229,  3746,_ , _ ,..............

1 ,  2 , 4 ,  7 ,  11   ,16,    22,   29,    37,   46 , _ , _ ,.............
  +1  +2 +3  +4   +5    +6    +7    +8    +9

Next four numbers  46 +10 =56
                            56+11 =67
                            67+12 =79
                            79+13 =92

Next two numbers in the original series  5667 , 7992

1247 , 1116 , 2229, 3746, 5667 , 7992 ,..............