# A120973 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 60
4 776
5 11802
6 201465
7 3759100
8 75404151
9 1608036861
10 36172106112
11 853346084343
12 21021015647574
13 538868533164995
14 14336235065928966
15 394957784033440194
16 11246848201518516044
17 330520280036501809758