# A351968 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 2
5 6
6 16
7 37
8 114
9 478
10 1907
11 6777
12 28414
13 148580
14 758930
15 3580294
16 18982050
17 117888762
18 720679726
19 4193516446
20 26798335830
21 191775198574
22 1353198262531
23 9303932353127
24 69303156652024
25 559295471922890
26 4454686099742810
27 35198016469190740