[1,4,14,49,172,604,2120,7442,26124,91704,321912, 1130020,3966752,13924640,48880192,171585992, 602324816,2114363648,7422130912,26054187664, 91459003200,321052008000,1127001041280, 3956154502688,13887439208896,48749604609664]