# A030963 (b-file synthesized from sequence entry)
1 2
2 4
3 12
4 49
5 245
6 1470
7 10295
8 82362
9 741264
10 7412647
11 81539127
12 978469535
13 12720103955
14 178081455373
15 2671221830606
16 42739549289708
17 726572337925041
18 13078302082650740
19 248487739570364075
20 4969754791407281515