# A130471 (b-file synthesized from sequence entry)
1 0
2 2
3 5
4 21
5 106
6 640
7 4527
8 36539
9 331508
10 3338358
11 36946489
12 445724977
13 5821580670
14 81839381996
15 1232102291651
16 19778348559015
17 337223021210632
18 6086161135368034
19 115915940643233613
20 2323409451689985053