# A161956 (b-file synthesized from sequence entry) 0 1 1 28 2 405 3 4032 4 31058 5 197288 6 1075697 7 5174180 8 22396787 9 88562288 10 323686749 11 1103799420 12 3538931886 13 10735761372 14 30981056614 15 85436083852 16 226032307036 17 575653531156 18 1415485760287 19 3369314791024 20 7781762472652 21 17474847498496