# A151462 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 27
5 89
6 320
7 1158
8 4347
9 16510
10 63903
11 249952
12 989110
13 3947056
14 15878333
15 64296723
16 261931840
17 1072616649
18 4413123474
19 18233286270
20 75619434417
21 314696837489
22 1313747904446
23 5500152407820
24 23087645330262
25 97148591427302
26 409700045646219
27 1731398744266320
28 7331054076146476