# A381170 (b-file synthesized from sequence entry)
0 1
1 1
2 37
3 289
4 2107
5 14329
6 105187
7 693579
8 4512054
9 28468770
10 176428599
11 1065826203
12 6323626404
13 36816785552
14 210944620532
15 1189766311028
16 6615412814561
17 36287015790029
18 196547683500294
19 1051919158699442
20 5566679104757415
21 29144209704259923
22 151039019038054896