# A067084 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 17
6 94
7 609
8 4552
9 38476
10 362881
11 3779006
12 43077462
13 533580649
14 7136963118
15 102529626260
16 1574596837316
17 25744424249914
18 446484648899818
19 8187058430845388
20 158263924457447255
21 3216829977408052830