# A364621 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 118 4 1125 5 11805 6 131431 7 1524090 8 18208749 9 222570985 10 2770129627 11 34985756752 12 447243818573 13 5775955923428 14 75245253495035 15 987627627396792 16 13048147674230169 17 173382031819242855 18 2315662483861709467 19 31068798980975635130 20 418552735866147739185