[1,1,4,7,20,38,96,187,444,874,2000,3958,8840, 17548,38528,76627,166124,330818,710256,1415650, 3016056,6015316,12736064,25413342,53530840, 106853668,224107936,447472972,935062544, 1867450648,3890018816,7770342787,16141765964]