# A377959 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 31
4 141
5 831
6 5773
7 45459
8 403161
9 3990331
10 43544721
11 518940423
12 6706062949
13 93404895351
14 1394851282581
15 22230473112571
16 376610264357553
17 6758060929028979
18 128047472471583001
19 2554547113522500591
20 53523844242070603581
21 1175091669834676927663