[0,4,28,124,444,1404,4092,11260,29692,75772, 188412,458748,1097724,2588668,6029308,13893628, 31719420,71827452,161480700,360710140,801112060, 1769996284,3892314108,8522825724,18589155324, 40399536124,87509958652]