# A124543 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 73 4 369 5 1959 6 10912 7 63543 8 385341 9 2424988 10 15788469 11 106075089 12 733801709 13 5217101283 14 38060759175 15 284533309380 16 2177136417042 17 17032924895739 18 136129119703837 19 1110507731328900 20 9240322072954209