# A025181 (b-file synthesized from sequence entry)
3 1
4 3
5 11
6 35
7 111
8 343
9 1050
10 3186
11 9615
12 28897
13 86592
14 258908
15 772863
16 2304225
17 6863496
18 20429784
19 60779403
20 180751617
21 537386595
22 1597372371
23 4747537641
24 14108988509
25 41928203694
26 124598731750
27 370279082745
28 1100428538391
29 3270534249843