# A289973 (b-file synthesized from sequence entry)
0 1
1 4
2 11
3 33
4 96
5 280
6 818
7 2387
8 6970
9 20347
10 59401
11 173414
12 506261
13 1477968
14 4314748
15 12596384
16 36773617
17 107356118
18 313413177
19 914971789
20 2671149257
21 7798096555
22 22765597881
23 66461404174
24 194026015382
25 566435438933
26 1653639620681
27 4827600476829