# A019068 (b-file synthesized from sequence entry)
3 0
4 0
5 5
6 4
7 12
8 34
9 54
10 152
11 360
12 669
13 1661
14 3856
15 8167
16 19462
17 45722
18 105386
19 255448
20 624360
21 1549315
22 3945767
23 10147944
24 26472937
25 69822227
26 185025991
27 492510221
28 1313320180
29 3501289056