# A296623 (b-file synthesized from sequence entry) 0 0 1 2 2 -12 3 448 4 -21728 5 2380032 6 -318185472 7 69695846400 8 -18235768762368 9 6697099792220160 10 -2892199532135841792 11 1606188416621920911360 12 -1034069421398404544593920 13 810882197441673837894696960 14 -727447103613537543910242385920 15 766865924510666637669136261447680