# A047113 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 10
5 29
6 164
7 534
8 1839
9 7813
10 28888
11 106712
12 423250
13 1621048
14 6175114
15 24116312
16 93457176
17 361166949
18 1408515216
19 5488264319
20 21368029926
21 83497729588
22 326481132377
23 1276713094911
24 5001089844661
25 19605767057292