# A019168 (b-file synthesized from sequence entry)
3 0
4 1
5 3
6 3
7 10
8 27
9 51
10 105
11 276
12 624
13 1352
14 3249
15 8234
16 20078
17 49502
18 128483
19 332677
20 855128
21 2241638
22 5916430
23 15555813
24 41112959
25 109117445
26 289434235
27 768896971
28 2047282146
29 5455894198
30 14556394537
31 38898123662