[1,4,20,106,586,3356,19728,118382,722208,4466050, 27931600,176371300,1122867012,7199842666, 46454345844,301384205640,1964899532794, 12866563846920,84585757496444,558060746899684, 3693810227983576,24521903234307786, 163234951757526400]