# A029815 (b-file synthesized from sequence entry) 0 61 1 252 2 16380 3 189280 4 1048572 5 3937752 6 11930464 7 30588480 8 67108860 9 133739676 10 255953880 11 460605600 12 763366240 13 1216356120 14 1928015424 15 2957689280 16 4294967292 17 6082667640 18 8693078940