# A019234 (b-file synthesized from sequence entry)
3 0
4 2
5 2
6 3
7 9
8 15
9 34
10 94
11 209
12 504
13 1306
14 3073
15 7654
16 20149
17 50226
18 130772
19 338518
20 867558
21 2257485
22 5870934
23 15278349
24 40053657
25 105184694
26 276937693
27 732156972
28 1938948436
29 5148099462
30 13701809925
31 36532372370