# A150187 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 21
4 74
5 283
6 1118
7 4474
8 18418
9 76926
10 324603
11 1386443
12 5975585
13 25934455
14 113306676
15 498104688
16 2200289474
17 9762376912
18 43502560144
19 194545972756
20 872853253320
21 3928480242241
22 17730045779203
23 80220588463158
24 363827774353128
25 1653728798863828
26 7531862909604940
27 34368356466413236