# A245043 (b-file synthesized from sequence entry)
0 1
1 3
2 15
3 117
4 1158
5 12930
6 154986
7 1947582
8 25317009
9 337610451
10 4592807895
11 63488144109
12 889226772132
13 12592147132572
14 179982549300948
15 2593187073716460
16 37622924436008574
17 549178914689660106
18 8059539548880228138
19 118846096104074358942
20 1760035125442960123992