# A152464 (b-file synthesized from sequence entry)
1 0
2 0
3 525
4 3105
5 18939
6 114381
7 693129
8 4195557
9 25405586
10 153820395
11 931359050
12 5639156409
13 34143908573
14 206733865761
15 1251728824798
16 7578945799704
17 45888871327435
18 277847147039527
19 1682304127857000
20 10185986079451152