# A149484 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 58
5 231
6 1084
7 4728
8 22723
9 103602
10 504562
11 2361704
12 11593006
13 55174776
14 272199900
15 1310139935
16 6485171356
17 31463283353
18 156106431306
19 761779721856
20 3785937470147
21 18555926973117
22 92334192444210
23 454082613214306
24 2261613072534943
25 11151639371837816
26 55581684676610844
27 274642522606342851