# A305710 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 11
4 53
5 297
6 1959
7 14499
8 120409
9 1097025
10 10931771
11 117685163
12 1363889133
13 16887554569
14 222672557631
15 3110742121059
16 45912214062961
17 713290136581697
18 11636755988405555
19 198800967493444875
20 3549276499518132325
21 66076184834921382313
22 1280502976522048458647