# A095018 (b-file synthesized from sequence entry)
1 1
2 0
3 2
4 4
5 17
6 28
7 189
8 531
9 1990
10 5747
11 23902
12 76658
13 291478
14 982793
15 3677580
16 13214719
17 49161612
18 177190667
19 664806798
20 2443387945