# A229808 (b-file synthesized from sequence entry)
1 1
2 2
3 16
4 122
5 1096
6 10322
7 102856
8 1054322
9 11104336
10 119175842
11 1299844576
12 14360860202
13 160403229016
14 1808192266322
15 20545886851096
16 235069897341122
17 2705792876561056
18 31312112470672322
19 364079737402597936
20 4251402314343575642
21 49835252820257276776