# A227713 (b-file synthesized from sequence entry) 0 1 1 9 2 90 3 836 4 6856 5 49787 6 326618 7 1977322 8 11244976 9 60908337 10 317509874 11 1605448440 12 7920487752 13 38297112551 14 182108066522 15 853884638758 16 3956279351760 17 18143381822941 18 82466719670866 19 371917534537524 20 1665777832832136 21 7415146800493139