# A149128 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 34
5 104
6 382
7 1339
8 4988
9 18544
10 70850
11 271890
12 1060528
13 4161164
14 16487268
15 65749179
16 263892516
17 1065095388
18 4320942050
19 17607151198
20 72053673624
21 295956572780
22 1219869663596
23 5044142750342
24 20918319018672
25 86986781478112
26 362640691240052
27 1515363972162724
28 6346212269965344