# A129815 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 2
5 6
6 22
7 102
8 506
9 2952
10 18502
11 131112
12 991226
13 8271792
14 73176262
15 703077552
16 7121578106
17 77437418112
18 883521487942
19 10726837356672
20 136104948161786
21 1825110309733632