# A378669 (b-file synthesized from sequence entry)
0 1
1 3
2 21
3 187
4 1878
5 20277
6 229806
7 2696523
8 32478204
9 399230972
10 4988220669
11 63165060093
12 808828667104
13 10455471983550
14 136255868388684
15 1788233397919211
16 23614059664575324
17 313531617379965156
18 4183068478829324388
19 56052027108881747724
20 754020313029799707018