# A217898 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 8
4 22
5 58
6 158
7 426
8 1170
9 3224
10 8977
11 25105
12 70680
13 199739
14 566842
15 1613454
16 4605788
17 13177776
18 37782903
19 108522417
20 312207970
21 899460505
22 2594638480
23 7493254511
24 21663019843
25 62687523055
26 181561095507
27 526275453283
28 1526600618192
29 4431347014046
30 12516888508178