# A173957 (b-file synthesized from sequence entry)
1 1
2 3
3 6
4 10
5 24
6 51
7 84
8 251
9 419
10 755
11 960
12 3121
13 3582
14 4515
15 9299
16 35878
17 42613
18 127165
19 211625
20 235352
21 5457937
22 17353542
23 23023556