# A302693 (b-file synthesized from sequence entry) 0 1 1 1 2 0 3 3 4 0 5 10 6 36 7 35 8 448 9 450 10 4600 11 13167 12 45408 13 240006 14 670124 15 3863835 16 13209088 17 60533974 18 268324056 19 1089776654 20 5328589520 21 22065836226 22 106289169448 23 481033496803 24 2231768294208 25 10748702587800 26 49858509230920 27 245664498591891 28 1175943617623264