# A061575 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 2
4 2
5 7
6 14
7 41
8 107
9 307
10 871
11 2546
12 7497
13 22380
14 67366
15 204517
16 625132
17 1922700
18 5945469
19 18473841
20 57649699
21 180602285
22 567772883
23 1790663427
24 5663969707
25 17963483548
26 57112388657
27 181994536484
28 581168157605