# A025208 (b-file synthesized from sequence entry)
2 1
3 1
4 3
5 6
6 12
7 28
8 64
9 154
10 382
11 979
12 2583
13 6998
14 19421
15 55106
16 159595
17 471041
18 1414958
19 4320813
20 13399076
21 42157076
22 134459874
23 434427716
24 1420861672
25 4701420879