# A180187 (b-file synthesized from sequence entry)
1 0
2 1
3 0
4 3
5 14
6 72
7 468
8 3453
9 28782
10 267831
11 2752828
12 30984336
13 379125192
14 5011756625
15 71190365580
16 1081514329155
17 17499480412746
18 300473929597320
19 5457031426340748
20 104520033700333069
21 2105651342251571562