# A148472 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 19
5 69
6 259
7 995
8 3984
9 16246
10 67846
11 288622
12 1242949
13 5426505
14 23918477
15 106383490
16 477100523
17 2153840179
18 9786732365
19 44713258872
20 205300573048
21 946979887510
22 4385632308942
23 20387463346828
24 95097247477114
25 444963582043322
26 2088037680188809
27 9824186906449215
28 46336721367973800