# A148394 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 16
5 52
6 188
7 673
8 2528
9 9448
10 36232
11 138642
12 538502
13 2089746
14 8183600
15 32039011
16 126154812
17 496759140
18 1963415328
19 7761746678
20 30760767292
21 121938877154
22 484214723920
23 1923302168038
24 7648666905624
25 30425224701788
26 121132809344714
27 482381656899028
28 1922197151700130