# A173381 (b-file synthesized from sequence entry)
1 3
2 11
3 31
4 163
5 661
6 929
7 2041
8 21341
9 15989
10 47387
11 125117
12 263411
13 123493
14 10426601
15 3654221
16 4167127
17 86622397
18 4036267
19 3910993
20 541513877