[0,0,0,0,1,0,4,6,14,36,77,168,395,851,1921,4254,9461,20991,46619,103360,229461,508731,1128706,2503028,5552197,12313707,27313442,60581866,134384684,298097515,661300177,1467072716,3254847737,7221496901,16023112774,35553756328]