# A149342 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 41
5 155
6 583
7 2217
8 8813
9 35117
10 140272
11 571017
12 2338774
13 9587488
14 39650883
15 164907088
16 686754386
17 2872729884
18 12067557814
19 50778198371
20 214221469713
21 906453747063
22 3842114215717
23 16314537689999
24 69423328905674
25 295872508187261
26 1262731872514009
27 5397670645267912